Voxalot / SIP Broker Support Forums - How to forward calls to Mobile Phone Using Voxalot

Hi there,
If someone can help me, please help me how to setup call forwading at Voxalot.
I had basic registration and then I paid $15/year to upgrade.
Now, as was mentioned at some other forums, I have two other sip accounts: Tpad & Phonegnome, which someone told me that I would need to have these two at Voxalot to make it possible for the calls coming to my Tpad number, could be forwaded to my mobile number with the help of Voxalot.

Now I am stuck, even I have paid for upgrading my Voxalot registration which seems to be worthless now.
Please help me to sort out this problem.
Thanks.