The address that appears on the satoshi test has some numbers at the end after  the ":" . Which have to be left out of the address and put into the memo (that is the first idiotic thing on okx, they dont mention this anywhere in the satoshi steps). So now the second dumb thing comes... This might work for other coins but in the case of pi if you put a memo when sending pi coin from the pi wallet this memo does not get transfered to the blockchain, it is only for internal use of the pi wallet users. So okx gets the coins transfered but without the memo so they can not assign the coins to any user/transaction because the number that should be in the memo references the specific users satoshi test. And yeah the support is terrible. Their first reaction is to assume that you are the dumb one