Hello there - very sorry for the trouble! As the OP originally posted, you might try clearing out some files:
1. Open a Finder window.
2. Hit Shift-Command-G.
3. Paste in the following:
~/Library/WebKit/
4. Delete the folder with name com.smileonmymac.textexpander.
5. Launch TextExpander.
Please give that a try - if that doesn't work, please feel free to reach out to our support team and we'll dig into it further. Thanks!
They're offering $2/month pricing to existing customers - for a year. To me, that's a subscription priced right where they keep more existing customers, improve their annual cash flow, and see more revenue from new customers on the higher priced plan. Unfortunately, after a year, I assume that the upgrade plan goes away.
Still, I'm uncomfortable with having to keep all my snippets on a server, so there's no benefit to the new release for me, so I'll be sticking with version 5, which they have promised to support through the next macos release. I'll worry about upgrading in fall 2017, unless their competition comes up with a compelling feature worth moving to early.