Why aren't I getting the letter?

[Idcboutu]

I finished the Underground Pass Quest just 30mins ago and right after or 5mins after I am suppose to receive a letter in which I can start Regicide with but I haven't received that letter and I am not able to start it. I want to finish this quest before going to bed so someone please tell me.

 

[Nikee]

It's random, try running around for a bit.

 

[Marine Clark]

Mine appeared in bank one time, very odd. You should look there.

 

[Idcboutu]

Maybe you got it because your invent was full? It's not in my bank, I just checked right now. This is a quest service that's why I want to get over it and not have to think of it tomorrow.

 

[Determinate]

Wiki says there may be some hidden requirements for you to have before you receive the courier.

 

[Idcboutu]

I've got it now Thanks for your help. Back to finishing this shit and going to bed. Pce out homies!