Try posting this question on our Creative Cloud Community - https://community.adobe.com/ 

If you are still experiencing this error, you'll need to contact Client Care so they can dive deeper into your account - https://experienceleague.adobe.com/?support-solution=General#support

If you are still having issues linking your account, please contact Client Care.   https://experienceleague.adobe.com/?support-solution=General#support  

You'll need to open a ticket with Client Care. You can email clientcare@adobe.com or check out the support portal - https://experienceleague.adobe.com/?support-solution=General#support  

Try checking out our beginner courses on Experience League https://experienceleague.adobe.com/#dashboard/learning  

Check out the Analytics training on Experience League https://experienceleague.adobe.com/#dashboard/learning  

We don't currently offer a sandbox environment for Analytics but we do have some great training for beginners on Experience League. https://experienceleague.adobe.com/#dashboard/learning

I'd recommend checking out some of our beginner courses for Analytics on Experience League. https://experienceleague.adobe.com/#dashboard/learning  

Try posting this question on our Creative Cloud Community - www.community.adobe.com

I assume this question was in regards to business catalyst. You should be able to find the latest details here - https://www.businesscatalyst.com/partners/build   There is also an EOL announcement here - https://secure.worldsecuresystems.com/product-announcement