Hello everyone, I am trying to use Zsync to transfer from my android phone, but it crashes every time...

Android 9
Samsung sm-j415fn
Koreader v2020.10.1

Thanks a lot.
Crashing doing WHAT?
Logs?
Koreader starts again. Where are the logs?
https://github.com/koreader/koreader/blob/master/.github/ISSUE_TEMPLATE/bug_report.md
There is a problem here... I don't have access to any PC with adb and I will not for a while...
Could be something like https://github.com/koreader/koreader/issues/3880 (that plugin is fairly unmaintained…)
Thanks for your suggestion. That is not the case however: koreader crashes before the transfer.

I will try the transfer from the ereader to the phone and see if something changes...

[Edit]
I was using the telephone as an access point.
I switched to an external router and that helped a bit.
I have been able to transfer a couple of files, but koreader keeps crashing with other ones... in a way similar to the one reported in bug 3880.

By the way I attach the android warning about frequent crashes, sorry if it is in Italian.
[/Edit]

[Edit2]
Even if I can find the books in koreader, I cannot find them using nor the device file manager neither the PC file manager when connected via USB...
[/Edit2]
The app is not in the app store. It doesn't use trackers, crash reporters, etc.

A screenshot is useless for native crashes. The only info we can get is from adb logs.

I understand that's not expected for most end users and most don't want to mess with their devices or don't have the resources at hand.

It is mostly fine for tinkerers, I guess. Feel free to give us some logs when you have time if you can and want.
Of course I will, but it will take a long time ;-)