When using Amazon Pay for Twitch Turbo, if the autorenewal fails, and you attempt to renew again via the subscribe to Turbo button, it will tell you to go to the Apple iOS app store to fix your subscription instead of telling you to fix your amazon payment method that was used. (This is with never using the apple app store to purchase Turbo, and not currently having any twitch subscriptions through apple)

TLDR
Amazon Pay payment method autorenewal failed.
Attempt to re-subscribe to Twitch Turbo.
Twitch website tells you to go to the Apple iOS app store to fix it.

Suggested fix, provide the correct messaging and links when someone tries to re-subscribe to Twitch Turbo after a failed autorenewal.