can't run program due to serial number

[davet12046685]

Your Adobe serial number has expired or is invalid

Your serial number has expired or was illegally distributed. 

No, it was not illegaly distributed, and when I purchased it, there was no expiry.

The online support just goes through a circular help system that leads nowhere.

I literally ran the software 1 hour ago, it crashed, and when I reloaded it, it said serial number expired.

I have only owned 1 computer in the past 4 years, and I never gave the code to anyone.

Please fix this for me.

[davet12046685]

I get an error saying the serial number is being used y the maximum number of computers.

So that means the maximum number of computers is 0.

[Steve Grisetti]

This is a user to user forum. We can't fix this. You'll need to contact Adobe Customer Care via chat.

Log into this page with your Adobe ID and then click the Chat icon in the lower right side of the page.

https://helpx.adobe.com/support.html

[John T Smith]

When you can't properly deactivate a serial number
BE SURE TO ONLY ASK FOR ACTIVATION SUPPORT TO ADJUST YOUR ACTIVATION COUNT
You may need to PERSIST or TRY AGAIN to find a support agent with more experience

This space is provided by Adobe, but it is not Adobe support
Sorry, nobody here can help with an account or payment problem
This is a public forum, you need the link to Adobe support, not other users
Be sure to remain signed in with your Adobe ID before accessing the link
Do be aware that Adobe's staffing is impacted by the virus, so wait times are long
-you MUST make sure that your browser does NOT block ads, scripts, or pop-ups
-you MUST also allow 'cookies' in your web browser for the link to work
This link will go directly to the chat option
Type "Agent" in the chat box to bypass the chatbot and be connected to a person
-Meaning type in the word Agent without the quote " " marks
https://helpx.adobe.com/contact.html?rghtup=autoOpen
- or by telephone https://helpx.adobe.com/contact/phone.html
.
Adobe does NOT do support by email, so beware of answering anyone who sends you a private message
-click for more information about scammers https://tinyurl.com/10791730