You have done something wrong.
If its a signal you are following, check here: https://www.mql5.com/en/forum/326172#comment_13849154
If its an EA you are trading with, here: https://www.mql5.com/en/forum/335842#comment_15618843
No, this has nothing to do with MQL5 VPS.
Try to change MQL5 VP server and synchronize again.
You can change the server from the above option.