I can still see it, so it's back in their queue.
Yeah, I can see it on Blockchair now also. Although this is completely irrelevant - whether or not one node in the network drops it or keeps it in their mempool makes absolutely no difference. The transaction as it stands is not going to confirm for weeks, at least. What OP needs to do remains unchanged:
So you need to contact Gamdon, explain your withdrawal has been stuck for 3 weeks, explain that given the state of the mempool at the moment it is likely going to be stuck for many more weeks, and ask them to replace it with a transaction paying a more appropriate fee.
Additionally, you could try asking them to send the coins to a different address, one which comes from a real bitcoin wallet such as Electrum or Sparrow which would allow you to use CPFP to avoid this situation in the first place.