I'm having trouble opening PDF's. The icons have turned black with a red border and when I try to open them I'm being prompted to sign a new licensing agreement. Having never had this before I wanted to make sure the request is genuine. Thanks for your help.
I am sorry for the delay in response.
Would it be possible for you to share the screenshot of the screen?
Please visit this link on how to insert a screenshot here in the forums:
Let me know if you face any issue while following the steps.