@jotka Ni, I don't use Waydroid. Sorry.

@odo Hi. I don't know if my answer will be relevant. Do you have FAT32 or exFAT on your SD card? I have the same phone and when I flashed UT on it, I also had problem with a SD card. FAT32 didn't work for me for some reason. But if the SD card is formatted to exFAT, it works without a problem.

Hello, It seems I made a step forward, but I can't solve the problem. Is anybody here who can help?
I realized that I have no access to the sd card. The warning has something to do with this issue I guess. I have to repeat the warning exactly:
"E: [libfs_mgr]Warning: unknown flag resize"
Is this a known issue?