8 sat/B should be enough to get your transaction confirmed within the next few hours.
The mempool is relatively empty at the moment (look here:
https://jochen-hoenicke.de/queue/#1,24h).
There only has been 3 blocks in the last 60 minutes (average is 6 per hour). Thats the reason your transaction hasn't cleared yet.
If you are not in a hurry, you can simply just wait a few hours.
If you somehow need this TX to go through fast, you can either use an transaction accelerator or use RBF (does not work with every wallet).