Won’t start after opening fuel flap

Well I hate to introduce myself with also having trouble. I bought a Tundra last night with 20k. I am coming from a 17 F150 that I was tiered of Ford stuff. Thought I was coming into quality.
Bought truck last night, got home to show off to kids. While we was looking at it I had opened fuel door and shut it and truck wouldn’t start. It doesn’t make sense but I have now repeated it several times.
If I shut truck off, push open fuel door (not cap) close it the truck won’t start until I shut everything thing off and wait for all lights to go off then it will start.
HELP

 

Here's a thread about the same, or similar problem. Apparently a bad starter relay was the culprit.

https://www.tundras.com/threads/fueling-issues-with-the-25-tundra-pro.157155/

 

Yes, thank you. Exactly the problem

 

You're welcome.

Keep us posted on your situation.

 

Otherwise I am liking the truck. It’s a a Canadian truck so the AC/Heater is in Celsius. Undecided about tow mirrors but for the price to switch I will get used to they.
Needing to do tail lamp recall so I plan to take this video with me for the gas flap.