There are many Tor block lists available, including lists that block all tor relays.
When you play in another’s walled garden you should not be surprised when they enforce their own rules.
As far as Tor is concerned, one could say it’s nothing personal. Amazon Video block a broad range of proxy connections, not only Tor & including VPN IP addresses too.
Whilst using an Amazon Prime account to watch videos has very definite limitations with regard to maintaining anonymity, including who the account is registered with & how they pay the bill, you could potentially win back some autonomy by spinning up a proxy connection that has it’s own unique, ‘untarnished’ IP address. Some choose to use a self-hosted VPN server to achieve this objective.
I was able to unblock Prime Video, since CenturyLink uses PPPoE = super easy IP changes. And my relay is back online too with that.
It was probably a bug in Amazon’s systems, Amazon accidentally marked CenturyLink IPs as “proxies”, since it didn’t happen earlier. I don’t have other middle relay IPs, since all my other relays are exits or bridges.
My mom was watching Prime Video, and she’s not super tech savvy sadly.