Can't use my digital certificate

Hello Francisco,
You've reached the AVG community support forum.
We regret the inconvenience this has caused you.
Please refer to this article:(https://support.avg.com/SupportArticleView?l=en&urlName=disable-avg-antivirus&q=disable+the+internet+security&supportType=home and) temporarily disable the AVG and check. Do let us know even after disabling the AVG if the issue persists or not.

Awaiting your response.

Hi everyone,

I can´t use my digital certificate in my notebook.
After lots of  tests, the certification company said it was because the AVG is blocking my certificate.
We tried to use the certificate deactivating the AVG but didn´t work also, but they still say some componet of AVG must be blocking the certificate.
May they be correct? Does any one have a "light" to help me in this issue?
Thanks!

Thank you for the reply Francisco . 
We are really sorry to know this.
Please do contact us again for further assistance. 
Thank you.

Thank you for clarifying, Francisco. Let us look into this & help you.
Initially, please let us know whether you're connected to internet through AVG SecureVPN & clarify whether AVG AntiTrack is installed on your computer.
Also, let us know what happens exactly while attempting to access the digital certificate. Do you receive any error message?
If so, share us the screenshot of it for better clarity.

Thank you for writing us back, Francisco.
Please follow the troubleshootings steps available in this article (https://support.avg.com/SupportArticleView?urlname=Troubleshoot-AVG-AntiTrack-web-access-speed) & check if the issue still persists.
Keep us updated.

Hello Francisco,
You've reached the AVG community support forum.
We regret the inconvenience this has caused you.
Please refer to this article:(https://support.avg.com/SupportArticleView?l=en&urlName=disable-avg-antivirus&q=disable+the+internet+security&supportType=home and) temporarily disable the AVG and check. Do let us know even after disabling the AVG if the issue persists or not.

Awaiting your response.