Unable to use IOS Apps

Operating system

iOS

Joplin version

13.2.5

Sync target

S3

Editor

Rich Text Editor

What issue do you have?

I am trying to use Joplin app in IOS.
I am using S3 sync with Oracle Cloud.
Below are the steps I followed:

I was able to successfully set up the sync from Mac destop. But when I try to setup using iOS, app crashes.
I have delete the app and redownload it.
I cannot use S3 configuration on iOS at all. I also tested with dropbox and it works fine.
But I want to use S3 configuration.