If that happened to 3 subscribers at the same time, then the cause is at your side, but the log file doesn't reveal anything about it.
It's a bit fast conclusion, it could also be an internet issue (big failure happens), a broker side issue or a Metaquotes side issue, or eventually an other unknown third-party issue.
True, but we can only guess with such poor evidence.
After checking the logs, it seems obvious to me that it's a "system" side issue (one of the component I mentioned above) and not a provider or subscriber side issue.
So they have to contact Metaquotes. Nothing can be done about this issue on this forum.
I agree Alain that looks like a system issue but I cannot think what.
They assured me that it wasn't a subscription expiry problem.