Blockstream Green Wallet

[PX-Z]

I have not used Blockstream Green before to broadcast transaction but according their their guide on using replace-by-fee to increase the transaction fee, it is stated that you can customize the transaction fee.

Enter a new, higher transaction fee. You can either select one of the three options provided by Blockstream Green, or click Custom and enter your preferred fee. Tap Next, then review the details and select Send to broadcast your transaction with the higher fee.

If what you included in your posted is true that would be an old version of Blockstream Green.

Yes, that was the older versions of the wallet, i even used the green wallet n
before too, it was before blockstream get it and change it the way they want to "blockstream green". Its good thing they have added more feature mow.