Hello,
The software design does not allow for accessing the tuner from Perform mode using the footswitches because of how the assignable footswitches work in this mode. Your best option would be using an aux switch or MIDI controller to access the tuner from Perform mode.
The tempo LED will only flash if a footswitch is assigned to “TAP” and tempo mode is on. This will work for all types of effects (modulation / delay / etc). If tempo sync is off, the LED will not flash in time, but that may be something that can change in a future update.
Thanks for taking the time to post here and let me know if you have any other questions!
