Candid: Apple Pay (U.S. nonprofits)
Claim your Candid profile: https://www.guidestar.org/UpdateNonprofitProfile/
You’ll need a minimum Bronze Seal of Transparency. All seal holders are approved to accept donations through Apple Pay. Earning a Seal of Transparency is free.

How to earn a Candid Seal of Transparency
Claim your nonprofit profile by doing the following:
Create a Candid account and verify your work email address. If you don’t have a work email address, simply upload your organization’s EIN Issuance Letter or an IRS Issued Letter of Affirmation to verify your nonprofit and gain access to your profile.
Enter your organization’s name or EIN to claim your profile.
Once approved, you can immediately start earning your Candid Seal of Transparency.
Complete a few questions to earn Candid Seal of Transparency by following the prompts. See the article “How to Earn a Bronze Seal of Transparency” for guidance on this step.
More information from the Candid Apple Pay FAQs: https://help.candid.org/s/article/Apple-Pay-FAQs