DropBox Saver: Button is not showing up. (Angular 6) - angular6

Question

I have tried everything but the exact same code works for the standalone application.
Here is the code for Profile component:
<app-header (sendUserdata)="getUserdata($event)" (sendToken)="getToken($event)" > </app-header>
<div id="wrapper">
<!-- Sidebar -->
<div id="sidebar-wrapper">
<ul class="sidebar-nav">
<li>
<a (click)="onClick('myProfile')"> My Profile </a>
</li>
<li>
<a (click)="onClick('addPassword')">Add Password</a>
</li>
<li>
Show Password
</li>
<li>
<a (click)="logOut()">Logout</a>
</li>
</ul>
</div>
<div *ngIf="myProfile">
<div id="page-content-wrapper">
<div class="container-fluid">
<div class="row">
<div class="col-lg-12" >
<h1>Hello, {{userData.ofa}}</h1>
<img src="{{userData.Paa}}" alt="">
<p>{{userData.U3}}</p>
</div>
</div>
</div>
</div>
</div>
<div *ngIf="addPassword">
<div id="page-content-wrapper">
<div class="container-fluid">
<div class="row">
<div class="col-lg-12" >
<div class="container">
<h1>Submit Password</h1>
<form>
<div class="form-group">
<label for="name">Application Name</label>
<input #applicationname type="text" class="form-control" id="" required >
</div>
<div class="form-group">
<label for="alterEgo">Username</label>
<input #username type="text" class="form-control" id="username" required>
</div>
<div class="form-group">
<label for="alterEgo">Password</label>
<input #password type="text" class="form-control" id="password" [value]="randomPassword">
</div>
<button type="button" class="btn btn-success" (click)="generatePassword()">Generate Random Password</button>
<button type="submit" class="btn btn-success dropbox-saver" (click)="submitData(applicationname.value,username.value,password.value)">Submit</button>
<hr>
</form>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
Here is the output if I run the exact same code as standalone application.
check screenshot of standalone app
Here is the output of the profile component where Save to Dropbox button is not showing up:
Not Working button after login
At the same time, the button is showing up on the main page, where user hasn't logged in yet.
I have tried checking without all the bootstrap classes and divisions. But, I am unable to get it working.