avast locked my proxy settings

When I was using a vpn avast blocked it, ever since then I have been unable to change the windows proxy settings, whenever I try to in chrome, (chrome->settings->change proxy settings->) under the connection tab I click lan settings and whenever I change the proxy server and hit ok when I open up lan settings and its unchecked, Im almost certain that avast is the problem, I’ve checked that I have full control in the registry and have done countless searching and have found nothing. I could really use some assistance

When I was using a vpn avast blocked it
What was the message avast gave you ?
Im almost certain that avast is the problem
Why do you think so ?

What OS/SP ?
What exact version of avast ?
What VPN are/where you using ?

something about a suspicious item being blocked.

ever since it blocked the application i have been unable to change any proxy settings( i can’t think of any other reason it wouldn’t work)
although i did try to go into safe mode and change and it didn’t work so I’m not really sure

not sure what ossp means

the latest version of avast

psiphon3 vpn (https://www.psiphon3.com/en/index.html)

not sure what ossp means
OS = Operation system > Win XP / Win Vista / Win 7 ...... SP = Service Pack > Win XP SP2 / Win XP SP3 .......