Litespeed randomly switches to apache and server doesn't work.
 

Occasionally the server switches to apache for no reason, but the litespeed cPanel plugin says that it isn't. During this time, nothing on the server works. This is really hurting my business. Please help me fix it.

which version of lsws? what is the last time you install/upgrade it?

4.0.11 enterprise. and a few months ago.

can you upgrade to latest 4.0.12, and see if the issue still exists.

When i click upgrade i get "Error: Failed to download release 4.0.12-ent!" and I havent had problems until this month.

you can do a manual install/upgrade.(same steps for install and upgrade)
if you've not tried it before, refer:
http://www.litespeedtech.com/docs/webserver/install/