Android App unable to login to open.rocket.chat and trial workspace

Hello,
I’m having the following problem, I’ve installed the Rocketchat app from the playstore, but I can’t login to open.rocket.chat (and my trial workspace). In my browser I can login in both workspaces.
When I open the app, and I select a workspace to login, I can enter my username and password, tap “login” but than nothing happens. Ive looked through several existing issues but can’t find a fix for mine.
I’m using Rocketchat version 4.14.1, Android v9, Omnirom (custom rom). My phone is not rooted. I’ve checked the app permissions, cleared the app cache, re-installed the app, rebooted my phone.
Thanks in advance.
Greetz.

It seems it has something to do with the phone. Works flawless on a different phone.