To be honest, I never thought getting rid of openlitespeed and cyberpanel would break EVERYTHING – just stay hell away from that crap and you’ll be okay! Believe the word of 40+ year veteran of the industry!
In it’s current form, both openlitespeed and cyberpanel are USELESS! If you don’t want to shed money, stay hell away from that cash grab! I switched my own server back to apache and virtualmin – low and behold, everything is back in order and previously not-so-working elements like email is back in working order!