The fee is 5.2 satoshi / byte, meaning extremely low.
Somebody with 35 sat / byte is already waiting for more than 16h, you could have searched a little.
The mempool size is big for quite some time now: btc.com/stats/unconfirmed-tx
And small red flag: last time I've seen such tiny fee, the sender did that because he wanted to (and did) double spend, so please be careful.
It happened to me too, I just made the transaction as usual over the ui of counterwallet and let th prio/transaction fee as it is as usual. Now my transactions also stucks.
The question is how can i free my transaction, cancel or get back my money. This is realy shitty implemenation if you can't even cancel it when it stucks like this.