It should affect all of your devices, regardless of the web browser used, for 24 hours. In any case, it is fortunate that one of your browsers is somehow not affected by it.
The robot check will clear automatically after 24 hours from the time point you triggered it at. Try to limit the amount of times you log in and out in a 3-5 minute timer period to avoid triggering it.
- - - - - - Any opinions expressed by myself are entirely my own and do not represent Virgin Media in any way.