AntiVirus extensions turned off

Hi Toby,

I apologize for the delay in responding to you.

I have sent you an e-mail and please revert us with the requested information. This will help us to find the root cause of the issue and it will be rectified shortly.

"System software from developer "AVG Technologies CZ, s.r.o." was blocked from loading. Press allow.

Tried this but allow doesn't work. Tried the youtube advice recommended by AVG, still doesn't work. 

I am on a Mac OS High Sierra 10.13.6

Any ideas? Thanks

Hi Toby,

I apologize for the delay in responding to you.

I have sent you an e-mail and please revert us with the requested information. This will help us to find the root cause of the issue and it will be rectified shortly.