I once sold altcoins on cointiger, and I forgot whether I left a small balance there or not. It seems like there's no hope of checking it anymore, because I checked the website, it really can't be accessed anymore. In the past, this exchange was not well-known, so they may have felt unable to compete with other exchanges and chose to run away from the competition.
The little information I know is that Cointiger is a CEX (Centralized Exchange) and the withdrawal and deposit process is quite fast. Now I don't actively use the cointiger exchange anymore, so this just reminds me of my assets on cointiger, the amount is probably no more than $15, so it doesn't really bother me. because I'm sure there are other victims who have bigger losses (possibly) when this exchange decides to close its services unilaterally.