Adobe pro 2017 acrobat trial expired even though I have the key

[Guest]

I have adobe acrobat pro 2017 which I have been using for a while . A few weeks ago it started to give me a trial expired error, even though I have the key but I cant seem to re-license the application. I dont have the creative cloud app, I bought it independently. i have included a picture of the error.

[try67]

By "key" do you mean serial number? What happens when you enter it?

PS. Do NOT post your serial number here!

[Guest]

Yes I mean serial number. It wont accept it.

[try67]

What is the exact text of the error message?

[Guest]

It does not  give me an error message, Only that the trial has expired like shown in the picture.

[try67]

You need to contact Adobe directly: https://helpx.adobe.com/contact.html

[Test Screen Name]

You say it won't accept it. Do you mean

- you get to type it but you get an error? If so, what is the error?

- you cannot find anywhere to type it?

- something else?