Phone number not accepted as valid on eservices portal

Hello, I tried to register with the e services portal... 

https://customerhelp.landregistry.gov.uk/afs-start/

No matter what format I use, the form will not accept my phone number as valid!

01932782889 / +441932782889 - I tried many other possible versions and combinations.

Can someone tell me the correct format please?

Thanks very much if you can assist. 

I have managed to pass the validation now. Thanks. 

You may close this thread if you wish.

Kind Regards.