So you can understand my problem quickly by reading the title.

After completeing the first missions of arc or arunmor,the next two emails don't arrive!!!!!

I've restarted a new campaign and reinstalled the game several times but the problem persists! :,(

What can i do?

Thankyou.

How many in-game days did you wait? I just ran in the fastest time skip for a few minutes and ran through to April 26 before I got an email from Arunmor with the next job. I'm pretty sure this is at least 9 (possibly 12) in-game days after I completed the initial Arunmor job.