I have installed carbonio ce 25.3.1 in multi server mode and via web all works fine.
By logging in via webmail in "https://server" it works regularly.
Accessed via IOS (apple) app Carbonio Mail ver 1.2.12 using the same url, it works normally.
Accessing via ANDROID app Carbonio Mail ver 1.2.19_release always using as an address "https://server" returns a wrong url error.
I have also tried various previous versions of the android app (even the 1.2.12_release similar to the ios one), but I always get the same wrong url "enter a valid server address"

Is there a log to monitor to understand the error, what could it be?
Thank you