My 83-year-old Mom was prompted to call Adobe for a free update of her flash player. She called and got a sales pitch, which she declined but apparently provided her email address, and now her browser opens with an Adobe-like page. Is this legit and how can she get rid of Adobe pop-up page?
No, that is not legitimate. Unfortunately, your Mom was tricked by a malicious Flash Player notification. I suspect your Mom's computer is infected with something (malware, adware, virus, etc). I highly recommend running scans for these on her computer.
Adobe does take these situations seriously. If you have the link to the malicious website, please private message it to me. I would also like to see a screenshot of the 'Adobe-like page' that loads when she opens her browser. See the Forum FAQs for instructions on attaching a screenshot to your post.