they made you a favor by removing cleanmymac

Smell to high heavens Apple has very good Firewall no need for 3rd party products, CMM is passive .

You are right for being suspicious  -  new install may be need

- Manual backup (Not TM)

- Erase

- Install MacOs....

So, this just happened to my Mother.

Epson Support just put in a 3rd party firewall, and removed CleanMyMac with anti-virus protection to "fix" their driver issue in 14.1.2.

This is OUTRAGEOUS.

And charger her.  So, this on the face of it looks like a Clear Attempt to scam, and Infect a computer.

Now I have to fix the damage.

Warning: Official Epson Support INSTALLS 3rd party FIREWALL, and Removes CleanMyMac ( Anti-virus protection ), to "fix" a printer Driver Issue in 14.1.2.