The ip 67.222.131.147 is blocked by pbxes (sometimes it works and suddenly pbxes blocks it)

Hello, I try to register my internal conm******[email protected] (as a provider in 67.222.131.147) for a few days it worked correctly, but now when I try to call, the call is disconnected, apparently it has a block . Can you help me unlock my intern so I can register it correctly?
Note: I noticed that ip 67.222.131.147 has partial crashes by pbxes (sometimes it works and suddenly crashes) please can completely release this ip, in order to be able to register pbxes as providers. Thanks for the help

RE: The ip 67.222.131.147 is blocked by pbxes (sometimes it works and suddenly pbxes blocks it)

This may be caused by registering to several PBXes from the same IP.

Next, please check if you can register permanently to one of our other IPs (www1-www4).

We usually do not block IP addresses.