If it's about a problem with the browser, it belongs on Super User.
If you have an issue with using a website or web app, it belongs on Web Apps.
However, if you have a question about browser plugins that interact with specific web apps, I I would encourage anyone to ask these questions on Web Apps, rather than Super User
All website related questions are explicitly off-topic for Super User, as you can read in our FAQyou can read in our FAQ
