I have the same software on 2 machines - one on my laptop and one in the office - I'm using X5 Pro 2019.2.9 and the office has the same X5 Pro with a version number of 2019.3.14.  Due to the pandemic, I need to load on the website to my laptop and update the site, but I can't import the website from the office as it says the website was created in a more upto date version of the software.  Yet, when I try to upload a more upto date version on my laptop, it tells me I'm already using the most up to date version. Yet your product list below this form suggests there is a 2019.3 version.  Interestingly, the 2019.3 product was automatically selected by this form.  

How do i solve the problem?  

I've rebooted my laptop, but it still says I've the most up to date version

Mark

http://www.compulsorypurchaseassociation.org/index.html