I am the only one having issues with speeding up transactions? I'm using the desktop wallet. Model One.
After clicking "Speed up" and choosing higher fees, the "Replace transaction" is always greyed out. No errors. and I do have enough funds to cover those fees.
Am I correct in assuming you're using bitcoin in your transaction?
Am I correct in understanding that you can't speed up an existing transaction created previously with a lower fee, and after attempting to increase the fee and speed up the transaction, this feature becomes unavailable?
I checked trezor suite for myself, and when initially creating a transaction, the option to increase the fee is available, but I believe your issue is different, so I'd like to wait for your response and test it if necessary.