Unable to place calls with my Israeli VSP

[Vlad]

Hi all.
After EU VoxaLot server was down, even after changing the preffered cluster to us.voxalot.com and registrar FQDN in my ATA also to us.voxalot.com, I'm still not able to place call, that routed in my Dial plan by Israeli VSP "012 Smile" - by SIP trace the ATA has receives the response "403 Forbidden".
This provider is the only provider in my account that require an active registration in order to place calls.
All other calls throught another VSPs (that don't require SIP registration) works just fine. I also would like to pay attention the VoxaLot support team to the fact, that before the problem with EU server has been occured, both inbound and outbound calls with this VSP works fine.
The problem account is 201438. Please contact me , if you need SIP trace of my ATA/softphone or account details of my VSP.