How do I change my monthly to my annual $99.99 subscription

Hello Paulita,
I understand your concern. You have already cancelled the automatic renewal for AVG Antivirus Pro($6.99 monthly) google play store subscription. The license will not be renewed and no money will be taken from your account for the renewal.
Yes, you have AVG Ultimate expires on 8/17/2018, which can be installed/activated on your Android phone.
Please download AVG Antivirus and AVG Cleaner from Google PlayStore on Android device, install it and then enter AVG my account by following below steps:
1.Device Menu -> Settings -> Apps/Application Manager -> AVG -> Uninstall.
2. Restart your device once.
3. Open Google play store app on your device.
4. Search for AVG antivirus/cleaner.
5. Locate and install the free version of the app.
6. Now open the installed app.
7. Tap on drawer (3 lines) on top-left of the app.
8. Select AVG Account.
9. Enter your My Account email address and password.
The paid app will be installed automatically.
Best regards,
Alok.

Hello Paulita,
I understand your concern. You have already cancelled the automatic renewal for AVG Antivirus Pro($6.99 monthly) google play store subscription. The license will not be renewed and no money will be taken from your account for the renewal.
Yes, you have AVG Ultimate expires on 8/17/2018, which can be installed/activated on your Android phone.
Please download AVG Antivirus and AVG Cleaner from Google PlayStore on Android device, install it and then enter AVG my account by following below steps:
1.Device Menu -> Settings -> Apps/Application Manager -> AVG -> Uninstall.
2. Restart your device once.
3. Open Google play store app on your device.
4. Search for AVG antivirus/cleaner.
5. Locate and install the free version of the app.
6. Now open the installed app.
7. Tap on drawer (3 lines) on top-left of the app.
8. Select AVG Account.
9. Enter your My Account email address and password.
The paid app will be installed automatically.
Best regards,
Alok.

Last 8/16/17 I purchased annual subscription, under p****@gmail.com.  Order # 1247**** AVG Ultimate and paid $99.99 + tax $6.87, total $106.86. Recently, I experienced a pop-up that would not go away on my Android cell. I now need to stop the $6.99 monthly Google Pay and include it with my Ultimate subscription. My "AVG Ultimate Pro" is not linked to my Samsung Galaxy S8+