If that's the case, I guess I should create tabs separately by using different versions of the browsers, which is highly inconvenient and a waste of my time. When I looked at the previous closed issue here, something about syncing to the cloud was mentioned, and you responded by making it a paid feature (correct me if I'm wrong). To be honest, I don't think that's a good idea, since many people are unlikely to pay to use proprietary software (especially if it's about to use a simple extension). In my opinion, it doesn't seem eloquent to tell people to pay you, thus I'd create a donation page and also make people not obligated to donate. I believe that choosing a good business model is always a good option, no matter how difficult it is to get it right. But other than that, I can understand your concern, as programming is so hard as it is and converting the work into some money here can make any sense with this circumstance.
So, do you intend to take care of future development? Thanks.