hi there!
If it is the issue with public/private network, try allowing it access to the local network (it needs to run a localhost server to work. by default I think it runs at localhost:3077)
if that still doesn't fix it:
1. make sure there is no firewall or other program blocking it from running on localhost on port 3077
2. if it's not that, could you share the error message you are seeing? if you could take a screenshot of the error that would also be very helpful.
3. if you have steps to reproduce the issue (example: 1. open the app 2. try to log in 3. etc) that could also help
4. are you on windows or macos?
With that extra information I can look into it and try to help