How to delete the eBlocker (HTTPS) certificate in Windows
Open a command console e.g. with the Keys [Windows]+[R]. Type in the command certmgr.msc and choose "ok" or press [Enter]. The certificate store will show and you may choose the branch "Trusted Root Certification Authorities" the eBlocker certificate will be visible and you can choose "delete" from the context menu. Don't get bothered by the harsh warning. You are easily able to install the certificate again if necessary. Finally you may close the certificate store window.
How to delete the eBlocker (HTTPS) certificate from Mozilla Firefox
Open the options menu in your Firefox browser and choose "Privacy & Security". On the page scroll down to the Security - Certificates section. Click at the button "View Certificates" and in the Certificate Manager on the tab Authorities you may choose the eBlocker certificate
and click on Delete or Distrust and confirm this action. Don't worry you are always able to install the certificate again if you have one of our eBlockers with a valid license.
How to delete the eBlocker (HTTPS) certificate from Apple macOS device
Choose “Utilities” within the Applications Folder. Then open “Keychain Access App”
On the left you may select Keychain "System" and Category "Certificates" then you can select the eBlocker certificate on the right. In its context menu click on "delete". You may be asked for the administrators’ password. Then you can close the current windows.
How to delete the eBlocker (HTTPS) certificate from Apple iOS device
Open the iOS settings and choose on the left “General” and on the right “about”, then scroll down to “Certificate Trust Settings”. There you’ll find the eBlocker certificate, you might deactivate it.
Here you'll find some examples on how to delete the eBlocker Certificate from your Android phone
Delete the eBlocker Certificate from a ZTE Blade L3 running Android 5.0.2
Open the settings menu of your phone and choose "security".
Now select the "Trusted credentials" menu and the tab "USER".
Here you are able to delete the eBlocker certificate:
Just open the certificate with a single tap and scroll down until you see the option "REMOVE". Just tap on it and it will be deleted.
Delete the eBlocker Certificate from a Samsung Galaxy S8 plus [t-mobile]+ Android 8.0.0
Open the settings menu of your phone and choose "lock screen and security" and then "other security settings". By tapping on "View security certificates" and the "user" tab you will be able to view the eBlocker certificate. Open the certificate with a single tap and scroll down until you see the option "remove". Just tap on it and it will be deleted.
Delete the eBlocker Certificate from a Sony Smartphone - with Android 8.x
Open the options menu and choose "lock screen and security" then "Encryption and login credentials" Please check out the user tab within "Trusted login credentials" and the "user login (VPN and App)". You may tap on eBlocker certificates and choose "remove" on the bottom in both locations.