Trying to sign up for a mobile number. What settings for Skype and VOIP/protocol/host/details please?
Microsoft ( which owns Skype now) also disabled the 3rd party API’s
If you’re not tied to them we highly suggest SIP, you get caller ID , its free and much more reliable
You can also use this SIP client ( refer to above post though)
Thanks and let us know if you need anything
Nick