From Steve Dent at Engadget:
"With ... advances in our technology, the Classic adapter and app will no longer be supported after August 31, 2019," the company wrote in a blog post. "After that date, the 1st and 2nd Gen adapters will no longer work." The company is now steering owners toward the latest $100 LTE adapter that's comes with an optional $5 per month Premium subscription.
Seems like a pretty bold move for a pretty niche product category. I own an Automatic. I don't get much value out of it and I certainly wouldn't buy another device from them.