I have been trying to use my AMBOSS add-on on my Anki app but it keeps saying that the selected file is not in UTF-8 format. How can I solve this?
You need to find out if the file is in UTF-8 format.
It is difficult to troubleshoot your issue without more information. A screenshot of the error message would help.
I can only guess that you may have downloaded one of the fake AMBOSS add-ons from Ankiweb.
Have you downloaded the official version from the AMBOSS website?
My guess is you’re trying to import the add-on, which is not how add-ons should be loaded - please make sure you follow the instructions the add-on author provided you.