Epic MegaGrants submission failed

Hi!
I was trying to apply for Epic MegaGrants, but it gave me an error:
" The form submission failed. This may be due to a high volume of submissions. Please double check all fields, wait a moment, and try again.
Invalid value for field ‘globalEmailOptIn’ and value ‘true’"
Do i only need to wait, like the first part suggests (waited some time, same error), or did i messed up something? I did not saw anithing marked as wrong. I was trying to apply using Brave, and then Opera browser too, can this be a problem?

Actually, selecting
“I’d like to receive news, surveys, and special offers from Unreal Engine and Epic Games.”
was the problem i think. Reloaded page, not selected it, and it worked.