Hi guys. We're very sorry for the inconvenience. We'll surely adjust a tooltip. To your question, why suddenly it starts to appear is that we've added a new message in case license is not available and it was implemented in current AV module 1548. In next version 1549 we'll also provide a more specific description of the error in computer details > alerts. Also, we've adjusted behavior in an environment with ESET proxy, so in case you have licensed EDTD and you experienced some issues, it should much better.
Thank you for understanding and we're really sorry for inconveniences.