The wallet is telling you that compared with current Network averages, your transaction is considered a low fee transaction.
The Bitcoin network has been experiencing significant activity for well over a week... The mempool has been averaging over 100,000+ unconfirmed transactions. As such, fees have skyrocketed
Your transaction has a fee of 0.00043492 BTC/KB... Which is equivalent to 43.492 sats/byte.
Currently, the recommended fees are over 800 sats/byte!!?!
(refer:
https://bitcoinfees.earn.com and
https://btc.com/stats/unconfirmed-tx)... Nearly 20x what you paid.
Your transaction is not going to confirm any time soon.
You can try right clicking the transaction and see if "bump fee" is available, otherwise ViaBTC accelerator (near impossible to use now because so many people competing for 100 slots) or a (trustworthy) paid accelerator like BTC.com or the paid service on ViaBTC. Other then that, sit back and wait, if the transaction isn't confirmed after ?? Days (maybe 2+ weeks) it will most likely drop from the mempool and the coins will be "returned" to your wallet.