Adding file type to the file upload field

Trying to add m4a file type. Went to "Extensions" and add m4a separate with a coma click ok.

Then when try to upload that file type it won't work. Go back and check on allowed file types in account and what I added isn't there.

What am I doing wrong?

Thank you!

Heidi

It worked for me when I tested it here and it is saved.

It also works in one of your file upload fields when I check it here.

Please try it again and make sure to save the form. It should be working.

That is great that it worked for you. I can get to that point and then when
we refresh it is no longer there. Are you able to either give directions as
to how you got it to save and stay there or point me in a direction that
will be helpful.
Thank you for your assistance!
...

Example, I added the m4a extension in your form 60061991728157

Here's what I did, it's basically the normal way to do it.

1. I clicked the file upload field

2. Clicked on Extensions button in the toolbar and added m4a separated by a comma (without dot or period)

3. Saved the form.