We need to get confirmation of the body of the message from @krobinson and @KHill-WMF in order to get started on this.

Please have the body of the email read:

I am unable to log into my donor account.

My full name :
The email address associated with my recurring donation :
The amount and currency of my donation :

Thank you for tagging this task with good first task for Wikimedia newcomers!

Newcomers often may not be aware of things that may seem obvious to seasoned contributors, so please take a moment to reflect on how this task might look to somebody who has never contributed to Wikimedia projects.

A good first task is a self-contained, non-controversial task with a clear approach. It should be well-described with pointers to help a completely new contributor, for example it should clearly point to the codebase URL and provide clear steps to help a contributor get set up for success. We've included some guidelines at https://phabricator.wikimedia.org/tag/good_first_task/ !

Thank you for helping us drive new contributions to our projects <3

Change #1305448 had a related patch set uploaded (by Laurabarluzzi; author: Laurabarluzzi):

[mediawiki/extensions/DonationInterface@master] Add body to login error email

https://gerrit.wikimedia.org/r/1305448

Change #1305448 merged by jenkins-bot:

[mediawiki/extensions/DonationInterface@master] Add body to login error email

https://gerrit.wikimedia.org/r/1305448

@krobinson This change has been deployed