After having  a major problem with my PC (which is sorted now), I have lost the ability to receive emails to my main email address, which means I'm not receiving forum notifications. 
I do however have a second email address which is working fine.  So how do I change the email address I have logged with you (N Gauge Forum) to my secondary email address please? TIA

Go to Profile the Account Settings.

Sadly that hasn't worked,and now I can only log on with my  phone. Can't log on on the PC

I'm guessing that'll be because the IP addresses of my phone and PC are different.

I access the forum from phone, ipad and laptop so I doubt the IP address is a problem not that it helps you .
Maybe a PM to Tank?

If you can email or PM me your new address please.

You will be able to log on with any device, as long as you know the password....!

Thank you Chris, PM sent.
Cheers, Trev.

All done for you. 

Yes, works a treat, and my son has just given me a Blackberry PlayBook, and I can even get on with that. Thanks again.