@marka53865769 please use a different device to access your account to registered serial numbers. You can reference https://helpx.adobe.com/download-install/kb/find-serial-number.html for a link to the registered products page.
The inability to access the registered products, nor for the software to send a successful activation request could be related. If you still can't access the registered products page, on other devices, @marka53865769 , then you may want to review the settings for the network itself to confirm that it is not blocking access.
You are right the software is quite old, you may want to consider a current release of photo editing software to see if you encounter the same problems. New or updated software licenses are often needed for new computers. You might also be amazed at some of the progress which has been made in Photoshop Elements since 2014.
I would still recommend verifying that you can view your registered products first, but if successful, then you can download a copy of Photoshop Elements 2024 at https://www.adobe.com/products/photoshop-elements.html?promoid=W6K8JLJC&mv=other.
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