"This amiibo can not be used again today" ..but I didn't use it today!
There is a delay of 24-hours between using most Amiibo.. but randomly it seems to not reset this timer. Fix this by restarting the Switch.
OK.. How do you restart the switch?
Hold the power button on the actual console tablet and a menu will pop up. Choose "Power Options" and you will get the option to Restart or Turn Off the switch.
It can't be restarted with the controllers alone.

If that doesn't fix it..

• Close Zelda if it's open


• Disable the Internet connection


• Go into Date and Time settings


• Turn off synchronize clock via internet.. that will unlock the option to edit date and time.


• Set the clock 24 hours (1 day) ahead.
  note: you can actually set the clock backwards too.. just note that your save files are in chronological order so make sure you load the correct saves after.

Try the busted Amiibo again.. it should work.