Can't connect after first time

[sotiris155]

Hello, I've downloaded and used the Tower android app for more than a year but later on 2 Galaxy S7s, one LG G5 Se and one LG G6 it does the same thing. It works only the first time. If I close the app, or remove the OTG and reconnect it, it never finds it again. Tried to clear default devices for Tower, uninstalled and reinstalled, rebooted phone, but nothing changed. Now I don't have any other devices to play with for "the first time".

I just hit connect and nothing happens.