The plugin works well

It did provide me with a certificate for more than 4 months karma with little hassle. Then a popup started appearing on my plug INS page and every page after that in the admin panel. And today, my website says a has an invalid certificate. I wonder if that is a little bit of spite on the developers part Or a way to force reviews and money. You been with this, the donation asked for is quite reasonable however, I am not financially able Even that much.