I bought my upgrade to PSE 23 a

Where have you been going to when attmping to download it and what happns when you try?

Here is a link that may help:
https://helpx.adobe.com/au/download-install/kb/photoshop-elements-downloads.html 

do you have your serial number?  (don't make it public).

if so, you can download a free trial, https://www.adobe.com/products/photoshop-elements.html

and activate it with your serial number