Anyone know why transaction descriptions would start reading as though there were some sort of API key or something? This has never happened before.
I would say reach out to support. You cannot restore that Transactions tab. Good luck.
Blake
I think you’ve been in touch with our support team on this, but we did a code push yesterday that introduced this bug for a short period of time and only affected a small group of customers who happened to update their sheets manually during the hour it was out there in the wild 
Let us know if you see other oddities with this.
Heather