Error submitting Trial application form

[#1]

Hi,

I've been trying to fill in the form to apply for the FTTP trial, but I keep getting an error asking me to enter a valid mobile phone number (I have and it's correct and matches that on my account details).  I've attempted this in both Internet Explorer and Microsoft Edge. Has anyone else had this problem/found a solution?

[#2]

By any chance does your mobile number start 074? I recall there being a problem with a certain type of mobile number that wasn't the average 077, 079 etc.

I've raised a ticket on your account for you.

[#3]

Yes, my mobile number does start with 074, that is obviously the issue.  I've filled in all the relative details on the ticket you've raised for me, thanks.