Hi Yahoo, I have used Yahoo Mail for years & am both grateful & enjoying. However in the last few weeks, when I'm using the app, almost daily, I can be looking at an email & try to zoom in on the content & it's not possible. This serms for no obvious reason. To rectify I have to delete all the cache, which means re logging in, & then it's ok for a few hrs, can someone please advise? Regards Craig.