sign up problem

[slowsandal]

why does signing up to this site not work if connected to a VPN

[jonsie]

i'll take a wild guess that it's precisely what the OP has done

[madasaf1sh]

@slowsandal 

To be honest you are going to have to call in as live chat is now mainly on the app.. 

So for your issue call o2 Guide: How to find help & contact O2 

I would be more worried about a Keylogger on your device than someone setting up a MITM attack to credential surf and unencrypt those details that are sent using SSL over HTTP and are bound by a 256Bit Certificate using encryption domains.. 

Sounds like you have been taken in by the annoying VPN adverts, as the only way to truly protect your data is to build your own VPN Server using L2TP which terminates on a server you own and manage. Or use TOR