Changing proxies for Instagram accounts

The proxy service I'm using is becoming a joke. They work for 2-3 days and then they won't work or another 2-3 days. Support is non-existent and takes days to hear back (if I hear anything at all).

Needless to say, I need to move my accounts on to a different provider as I'm losing way too much time...

Is there anything I need to be aware of when moving my accounts over? I don't want to lose my accounts due to a stupid mistake...