Will these help?
How to upgrade the Online version
https://ttlc.intuit.com/community/upgrading/help/how-do-i-upgrade-or-switch-to-a-higher-version-of-t...
Why don’t I see the upgrade button?
https://ttlc.intuit.com/community/upgrading/help/why-don-t-i-see-the-upgrade-option-in-turbotax-onli...
