Hello @alex.webber
What happens when you try?
The email gets added + then vanishes almost instantaneously (after I do a refresh of the page @Trudy P Claspill )
I don't have an answer for you yet, but I see a very similar questions has been asked elsewhere. You might want to Watch this question in case an answer gets posted there.
https://community.atlassian.com/t5/Jira-Service-Management/Customers-disappearing-after-being-added-to-a-project/qaq-p/2251912
This seems to have fixed itself now FWIW @Trudy P Claspill - not sure how or why, mind you!
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