Is this correct sentence?

I have been working at an IT company for less than 6 years as a support manager. My job includes managing domains, registering re sellers, hosting re sellers such as whm and plesk, direct administration duties and providing education applications to customers and solving the application problems.


What is whm and plesk?

It's about website hosting

first version, sheer guesswork:

I've been working in a It company for the last 6 years as Support Manager, handling domains-register resellers and hosting ones like whm, plesk, directadmin., etc. I've also applied education applications to others' customers, thereby fixing their app problems

second version(corrected still again, by guesswork)

I've been working in a IT company for less than 6 years, where I'm Support Manager processing domains-register resellers and hosting those such as whm , plesk, direct- admin, etc, and other such customer-education apps

first of all thx for you concern and what would I do to come out of guesswork?

Not at all May, was challenge indeed

No offense May; but it might require quite a bit of context