https://preev.net/ always working, unfortunately, the planned improvements are long behind schedule 

I can confirm this. I tried to do a reset but it did not work. It seems to be a problem related to Binance & Bitstamp APIs.
I do not use Telegram, but try to contact them using ----> https://t.me/PNNVMe someone may respond to you, although I think this problem will be solved.
I suggest adding a trusted member like @bitmover, as he has technical experience and is active here.