Steps to replicate the issue (include links if applicable):

• Settings > Donate
• Donate with ApplePay
• Choose first amount ($3), then choose last suggested amount ($100)

What happens?:

• Transaction fee remains the same at $0.35

What should have happened instead?:

• Transaction fee should scale up with amount, matching behavior of donate.wikimedia.org

(https://drive.google.com/file/d/1hAqiOGtYRxDoQ8Y2E5GGSg2MYVIxn4Uf/view?usp=sharing)

Reference

• The fee should be 4% of the amount, or the relevant fee minimum, whichever is higher. The default fee minimum is 0.35
• Function: https://meta.wikimedia.org/wiki/MediaWiki:FundraisingBanners/CoreJS-2018.js#L-461