Whilst tinkering (like an idiot) I've managed to replace the password on the SIP Registration settings for my line (server is sip.epygi.com), with the result that I'm now getting the message :
Could not Register user xxxxxxxx on server sip.epygi.com:5060. Reason: Authorization failure.
Is there any way I can log onto sip.epygi.com to set the password there to match ? Alternatively, is there any way to recover the original password associated with this line ?

Cheers,
Steve