Option to share ringtone is missing

I created a project on my Mac and shared it as a “GarageBand for iOS” but when I open the project on my iPad or iPhone I’m missing the share button in step three below.

Any ideas?

Export the project as a ringtone

1.) Open GarageBand on your iPhone, iPad, or iPod touch.

2.) In the My Songs browser, tap Browse , tap Select, then tap the project you shared from your Mac.

3.) Tap , then tap Ringtone.

4.) Enter a name for the ringtone, then tap Export. If the ringtone is longer than 30 seconds, tap Continue to have GarageBand shorten the ringtone automatically. Or, tap Cancel to return to the song so you can shorten it.

5.) Tap Export.

6.) When the ringtone is finished exporting, you can assign the ringtone.

[Re-Titled by Moderator]