Is that other transaction still hanging in your wallet with the unconfirmed status? Can you check what the transaction fee is in sats/vB?

Right now, mempool.space is suggesting that you need at least 60 sat/vB for your transaction to make it into a block and get confirmed. A few hours ago, it was a bit lower at around 30 sats/vB. So, if your fee is way below that, you might be in for a wait. Now, there are a couple of moves to consider. Cryptomixer could potentially help by using RBF, or you can try CPFP on your end if you don't want to wait for their support.

The transaction fees seem to have gone way up compared to just the other day.  That likely means there's some stuck transaction because of too low a fee.  If it's about sending coins out from your wallet to the mixer, you could try RBF (Replace-By-Fee) to get it moving faster.  But if it's about getting coins into your wallet from the mixer, CPFP (Child-Pays-For-Parent) could work if your wallet supports it.

Check out these sources for more info:
How Replace-By-Fee (RBF) an Child-Pays-For-Parent (CPFP) can speed up confirmation
[TUTORIAL]getting a low-fee transaction unstuck by creating a CPFP with electrum