The coin is traded on only one exchange - this is bad!
At the exchange with the wallet everything is fine, it was simply turned off to pump a coin!
There is an interested person who benefits.
As soon as the price is jump up to the desired mark and someone will sell their coins, the wallet will turn on again. The price will fall and everything will go as before.
This is very often observed with coins that are traded on only one exchange.
Dev need to connect more exchanges !!!