diff --git a/src/app/app.component.ts b/src/app/app.component.ts
index 5a94adb..64ed64e 100644
--- a/src/app/app.component.ts
+++ b/src/app/app.component.ts
@@ -55,10 +55,10 @@ export class AppComponent {
     const startTime = localStorage.getItem('sessionTimeJOIN');
 
     if (startTime) {
-      const startTimeMillis = parseInt(startTime);
+      const startTimeMills = parseInt(startTime);
       const currentTime = new Date().getTime();
       const timeDifference = 12 * 60 * 60 * 1000; // 12h
-      if (currentTime - startTimeMillis > timeDifference) {
+      if (currentTime - startTimeMills > timeDifference) {
         localStorage.clear();
       }
     }
diff --git a/src/app/components/login/forgot-pw/forgot-pw.component.ts b/src/app/components/login/forgot-pw/forgot-pw.component.ts
index e35c4bf..b20a6c2 100644
--- a/src/app/components/login/forgot-pw/forgot-pw.component.ts
+++ b/src/app/components/login/forgot-pw/forgot-pw.component.ts
@@ -5,10 +5,8 @@ import { FormBtnComponent } from '../../../shared/components/buttons/form-btn/fo
 import { FooterComponent } from '../footer/footer.component';
 import { HeaderComponent } from '../header/header.component';
 import { TranslateModule } from '@ngx-translate/core';
-import { FirebaseService } from '../../../services/firebase.service';
 import { LoginService } from '../../../services/login.service';
 import { SharedService } from '../../../services/shared.service';
-import { Router } from '@angular/router';
 import { BtnBackComponent } from '../../../shared/components/buttons/btn-back/btn-back.component';
 
 @Component({
@@ -32,27 +30,18 @@ export class ForgotPwComponent {
   };
 
   constructor(
-    private firebaseService: FirebaseService,
-    public loginSerivce: LoginService,
-    public sharedService: SharedService,
-    private router: Router
+    public loginService: LoginService,
+    public sharedService: SharedService
   ) {}
 
   onSubmit(ngForm: NgForm) {
     this.sharedService.isBtnDisabled = true;
     if (ngForm.submitted && ngForm.form.valid) {
-      this.loginSerivce.passwordReset(this.pwResetData.mail.toLowerCase());
+      this.loginService.passwordReset(this.pwResetData.mail.toLowerCase());
     }
   }
 
-  existEmailonServer(mail: string) {
-    return this.firebaseService
-      .getAllUsers()
-      .filter((user) => user.email === mail);
-  }
-
   checkIfUserEmailIsValid(emailValue: string) {
-    const channelNameLenght = emailValue.length;
     const emailRegex = /^[\w.%+-]+@[\w.-]+\.[a-zA-Z]{2,}$/;
     if (emailRegex.test(emailValue)) {
       return true;
diff --git a/src/app/components/login/register/register.component.html b/src/app/components/login/register/register.component.html
index 7409627..2bdd1c4 100644
--- a/src/app/components/login/register/register.component.html
+++ b/src/app/components/login/register/register.component.html
@@ -77,7 +77,7 @@
           !sharedService.isBtnDisabled) {
           <p>{{ "register.errorMail1" | translate }}</p>
           } @else { @if
-          (existEmailonServer(registerData.mail.toLowerCase()).length > 0 &&
+          (existEmailOnServer(registerData.mail.toLowerCase()).length > 0 &&
           !sharedService.isBtnDisabled) {
           <p>{{ "register.errorMail2" | translate }}</p>
           } } }
@@ -87,7 +87,7 @@
           id="password"
           name="password"
           #password="ngModel"
-          [type]="loginSerivce.passwordFieldType"
+          [type]="loginService.passwordFieldType"
           placeholder="{{ 'register.password' | translate }}"
           class="custom-input"
           autocomplete="new-password"
@@ -104,8 +104,8 @@
         } @else {
         <img
           class="passwordEye"
-          (click)="loginSerivce.togglePasswordVisibility()"
-          [src]="loginSerivce.passwordIcon"
+          (click)="loginService.togglePasswordVisibility()"
+          [src]="loginService.passwordIcon"
         />
         }
         <div class="error-msg">
@@ -122,7 +122,7 @@
           id="passwordConfirm"
           name="passwordConfirm"
           #passwordConfirm="ngModel"
-          [type]="loginSerivce.passwordFieldType"
+          [type]="loginService.passwordFieldType"
           placeholder="{{ 'register.passwordConfirm' | translate }}"
           class="custom-input"
           autocomplete="new-password"
@@ -139,8 +139,8 @@
         } @else {
         <img
           class="passwordEyeConfirm"
-          (click)="loginSerivce.togglePasswordVisibility()"
-          [src]="loginSerivce.passwordIcon"
+          (click)="loginService.togglePasswordVisibility()"
+          [src]="loginService.passwordIcon"
         />
         }
         <div class="error-msg">
diff --git a/src/app/components/login/register/register.component.ts b/src/app/components/login/register/register.component.ts
index 955d6b6..9f2f84a 100644
--- a/src/app/components/login/register/register.component.ts
+++ b/src/app/components/login/register/register.component.ts
@@ -42,7 +42,7 @@ export class RegisterComponent {
 
   constructor(
     private firebaseService: FirebaseService,
-    public loginSerivce: LoginService,
+    public loginService: LoginService,
     public sharedService: SharedService,
     public translateService: TranslateService
   ) {}
@@ -51,7 +51,7 @@ export class RegisterComponent {
     this.sharedService.isBtnDisabled = true;
     if (ngForm.submitted && ngForm.form.valid) {
       this.splitName();
-      this.loginSerivce.register(this.registerData);
+      this.loginService.register(this.registerData);
     }
   }
 
@@ -61,7 +61,7 @@ export class RegisterComponent {
     this.registerData.lastName = names.slice(1).join(' ');
   }
 
-  existEmailonServer(mail: string) {
+  existEmailOnServer(mail: string) {
     return this.firebaseService
       .getAllUsers()
       .filter((user) => user.email === mail);
diff --git a/src/app/shared/components/sidebar/sidebar.component.html b/src/app/shared/components/sidebar/sidebar.component.html
index 9793aac..8f2beec 100644
--- a/src/app/shared/components/sidebar/sidebar.component.html
+++ b/src/app/shared/components/sidebar/sidebar.component.html
@@ -11,7 +11,7 @@
         'switch-language': languageService.currentLang == 'de'
       }"
     >
-      <img src="./assets/img/sidebar/summary.svg" alt="sumary" /><span>{{
+      <img src="./assets/img/sidebar/summary.svg" alt="summary" /><span>{{
         "sidebar.summary" | translate
       }}</span>
     </div>
diff --git a/src/assets/i18n/de.json b/src/assets/i18n/de.json
index 9fe597d..6a51abc 100644
--- a/src/assets/i18n/de.json
+++ b/src/assets/i18n/de.json
@@ -92,7 +92,7 @@
   },
   "contactDeleteDialog": {
     "deleteContact": "Möchten Sie den Kontakt wirklich löschen?",
-    "btnCancle": "Abbrechen",
+    "btnCancel": "Abbrechen",
     "btnDelete": "Löschen"
   },
   "summary": {