Hi Thomas,
I'm afraid that I cannot find any record of you contacting us at Avast to cancel the the subscription before April 16th - but I can see a record that you responded to an email reminder sent by our distributor (Digital River) on the 2nd April. I do apologize that you did not receive a response after you received the notification that the email had been received, and I will make sure that your feedback about this issue is passed through to our distributor's support team.
Unfortunately, responding to the reminder email does not cancel the subscription - as described in the email, this can be done through the page
www.avast.com/find-order with the password contained in the email.
I am sorry to hear that you are now experiencing further issues with the application itself.
I would recommend that you wake up any programs that you have put to sleep before uninstalling the application - normally, uninstalling the app will do this automatically, but manually waking the programs will ensure that you do not experience any further issues with the application.
To wake the programs, please open the Avast Cleanup Premium app > click the "All functions" button (the icon with the 9-dot grid on the right hand side of the app's home screen) > click the "Show background & startup programs" link > click the "# programs sleeping" heading (you may need to scroll down to find this) > click the "Wake" links to the right of each program to wake them. Please do this one by one, waiting until a program is removed from this list before clicking the "Wake" link for the next program.
Please also confirm if you would like the subscription to be cancelled and refunded, and I will arrange this for you (as it appears that the refund form has not been submitted).