Good idea. Support forum created and this topic moved.
Regarding the problem, I have investigated things further. Must say this seems to be an elusive bug and I have wasted a few hours to track it already.
Apparently the two units get to the server with their User Agent info stripped. Probably other parts of the packages are changed as well. Also the source IP is null. I don’t know what on their route changes their HTTP headers. Local tests didn’t show this issue, and it is impossible to consider a malfunction of any kind.
I can only assume a firewall would be able to have this intrusive result.
With the User Agent info removed and no source IP, the server denies the packages with a HTTP 400 Error code (Bad request).
I will see what I can do about this.
