Use a short decision path to separate a network issue from a room-specific problem.
WORKED CHECK 01
If every screen is slow
Test a normal website and compare another trusted network if available. Stop large background downloads before repeating the lobby check.
WORKED CHECK 02
If only one room is slow
Record its name and any error identifier. Avoid repeatedly tapping an action while the accepted state is unclear.
WORKED CHECK 03
If the app closes
Check available storage and the supported Android requirements. Save the error description before deciding whether a reinstall is appropriate.
WORKED CHECK 04
If the problem remains
Send the publisher a minimal reproducible sequence: open app, choose room, observe error. Keep passwords and private payment details out of the report.