cannot connect to Databag server using Android app

I've set up Databag using docker compose: ```yaml name: databag-example-http services: app: image: balzack/databag:latest restart: unless-stopped ports: - 7000:7000 volumes: - database:/var/lib/databag environment: - ADMIN="password" volumes: database: ``` and was able to access it using web browser on `192.168.1.121:7000` then I installed a mobile app from F-Droid. didn't succeed to connect using IP-address and port and decided to set up a reverse proxy. now it is accessible on `databag.rpxy.lan` from web browser, but, again. not from mobile app the error I get: ``` Operation Failed Please try again. ``` not very descriptive, actually I then noticed that F-Droid app was not updated for a year and downloaded a Play Market version. same error again I can access Databag using web browser on my phone and laptop