Won't let me submit 1:1 incquiry

[iGaymer]

I need to get my hero flag replaced with the correct one but can't message support because it says submission failed. Who can I contact directly for this?

I need to get it fixed immediately.

Thank you!

[illumi]

Hi player, kindly send in your submission using another email

[KingArrancar]

I've tried both yahoo and gmail and apparently submission only accepts hotmail addresses... why would it not accept the most popular email addresses...?