Yes — you can use one Amazon account to activate multiple TVs or devices. The main limitation is on simultaneous streaming: up to 3 different videos at once, but the same video can only play on 2 devices at the same time.
Device Registration: You can register multiple TVs, Fire Sticks, smart TVs, or other devices under the same Amazon account.
No Hard Limit on Devices: Amazon does not set a strict maximum number of devices you can register.
Streaming Rules:
3 concurrent streams allowed per account.
Same video limited to 2 devices at once.
Pay-Per-View live events can only stream on one device per account.
Amazon does allow multiple devices, but there are some limits:
You can register multiple devices on one account
You can stream on up to 3 devices at the same time
The same video can be streamed on 2 devices simultaneously