Verification issue Brave rewards/Creators

I’m new. Albert Visser from Holland. I did have an account already at my laptop. On my main computer the system didn’t recognize my mailadress. Why=?
Question: Why is it so difficult to verify in Brave payments verification (Brave Rewards creators) . It have to because of my own website: https://praktijkabvisser.nl/ab-visser/
I tried to download a plugin …that’s not the issue but :
Copy the verification code below into the plugin.
How can I fix this??