Hello,
I suppose you have a free version of Avast Security. The monitoring function is a premium one, so this button should load our online flows with Avast Premium Security offer. I have tried this flow on two of our testing systems and it loads correctly on both.
Does the issue persist for you? If yes, please generate a support package so we can take a look at logs. You can do so by using Send Feedback functionality from our About dialog.
Thank you very much,
Jakub