I needed to "allow notifications" on Android in order for this to work. This is the only AI summarizer extension I've found on Firefox for Android, and Chrome doesn't even allow extensions. So it's awesome for Android users!

按钮太大了而且不可移动也没有开关，太碍事了

I love the add-on. The only thing that it's missing is a way to remember the language and the length of the summary. It always defaults to Vietnamese and 'short' for me. Please add the capability!