Lately I have difficulties logging-in to my two different e-mail providers. I have had them for years without any problems. Both don't let me log-in anymore. They want me to deactivate my ad-blocker - but I do not have an ad blocker installed with Mozilla Firefox! There is no such sign on the upper right and in the themes there is none either. The data protection is on standard. Although I agree to cookies but this doesn't help at all. So: where is the problem and why all of a sudden? What can I do? thanks in advance for your help.