I hope it would not happen.
What the developer need to continue develop? Could all users afford? If there are many users, I guess it is not hard to do.
BUT, the developer need provide not only good product, but also CONFIDENCE. If users have confidence, what can stop developer to give up?
I like the plugins very much and the plugin is removed from the oxwall store.
can i upgrade the plugins and use them as many websites i want? the plugin still have some license but will the license go away if the plugin go away from the store?
Yes, Marcus, you're free to update the plugin and use it, however you won't be able to use it on several websites, the lisence check for the plugin is still active.
As to your second question, I'm not sure if someone is such a long-liver)) Probably after living 100 years, he won't mind you do that