Hi
today I experienced the server went down.
Did you choose any screenshots on your position/chart/price until you closed your mt4?
Which should be first thing to do, before closure platform, etc!

I doubt they would want to scam you, I had in the past some issue with down server, and a few position off quote, all was revived satisfactory within fourteen days.
There is an Exness thread, with a representative .... . .contact her, to forward your problem. You may need somebody to help with the English explaining though Exness may have Vietnamese support, I found that routine support can help small past the fundamentals.
Exness has all your trade log on their server, soI believe that they can restore things.
Can your commerce be still in profit, or it is really would be a loss today?
I know that 85 pips a lot, especially if you have larger lots, therefore, I hope your problem will be sorted out shortly.