Hey, @Lonnie_Mason, @Jenny2222, @campdovid!
We don't currently provide a way to update the EIN for Shopify Payments within the admin as this request requires an escalation to our Billing department. To update the EIN, we will need a document that includes these four elements:
I've gone ahead and emailed each of you to request this information. If you can follow up via email with the required document, then I can ensure your request is escalated up to our Billing team. In the future, I would recommend starting a new thread vs reactivating an older one as newer threads have a higher probability of being seen by our community and Shopify employees. Starting a new thread will help action your question/concern quicker to provide a better Community experience.
I've shipped you an email! You'll need to reply back there with the requested information so I can get this escalated.