You're definitely missing something. Theres no announcement that Sync Ultra is being abandoned (presumably, as a subscription service, its brought along to the new app) & there doesn't appear to be any other way to directly donate to LJ (i've asked)
Worst case scenario in which it doesn't port over, I spent $30 on app that i've used daily without a subscription for over a decade. Good spend imo
You’ve GOT to give