If your app is updated to the latest version you should see the fee slider with a subcategories just like what TryNinja have said although its strange that a
priority miner fee gets confirmations after a few hours as it should just be minutes. I guess its because of the increasing loads of unconfirmed number of transaction in the mempool. The fee estimation is proportional on how busy the network is. Thats why its possible that after you executed your transaction the mempool got busier making the last fee estimation on mycelum's inaccurate. I recommend viewing the charts before sending
https://blockchain.info/unconfirmed-transactions l
https://btc.com/stats/unconfirmed-tx.
But since you can't edit the fees manually on mycelum's. The highest you can get is the last subcategory on
priority miner fee (last on right)
That is why i ask here because it takes hours before my transaction sent..
the only thing that i seen after i check transaction TXID the fee is 165.096 sat/B
Its nearly a normal or defaut fee according to bitcoinfees so in my own solution that i think can solve this is to setup mycelium to manual fee but there is no option for that so updating it to new wallet is a good idea because my wallet and transaction right now are fine and i got my transaction confirm in minutes compare before..