With the recent major iOS updates (it seems), now our iPhone users cannot connect anymore using the Mattermost app.
The Mattermost-Classic app works though.
The Web and Android versions work.
The problem is that after entering the address of our self-hosted server, they are asked to IMPORT KEY (see picture)
I find absolutely no information about that screen.
Then it sometimes crashes
Server: on Docker, behind our provider’s NGINX RP (and of course the NGINX docker RP)
Build Number: 5.16.3
Build Date: Wed Nov 6 14:03:24 UTC 2019
Build Hash: 533c7bb3e5847db423387abfcf983e3f947818eb
Build Enterprise Ready: false
DB Version: 5.16.0
Please if anyone has info!