Need help upgrading Brooklyn Update 1 - Iteration 6 (9.5.6) to Spark (12.1.3)

Trying to upgrade my Skuid instance but having trouble using the standard link
https://www.skuid.com/releases/?_ga=2.124674314.1886942203.1557860369-1102396205.1550600350

After following the wizard to upgrade Sandbox, i eventually get to the message that, It is taking too long to upgrade and i will be emailed when its completed, but i never receive the email and after waiting awhile no change to the Skuid under installed packages in my environment.

Any help with this? do i need to install incremental upgrades before i can jump to spark? Obviously missed a lot of content as i am still on Brooklyn.
Is there anyway to see a log? any potential error? is it still trying to upgrade and i am not aware? Is there any other way to upgrade outside of the link above?

Attempted to update to version 11.2.23  first but still no luck.

Any ideas?

https://success.salesforce.com/issues_view?id=a1p3A000001SGUdQAO

Until further notice

Hi Peter, please see more information here: http://community.skuid.com/skuid/topics/issues-with-upgrading-skuid-on-salesforce-summer-19-instances