It has been nearly a year since Jawbone's most advanced tracker, the Up4, hit shelves, and the company doesn't seem to be doing well. According to a Business Insider report, Jawbone didn't pay its customer service partner NexRep, and Jawbone cut ties with the company shortly after.

The report cites an e-mail from a NexRep executive that says Jawbone is "struggling financially" and couldn't pay for the company's services. The abrupt termination affected 93 NexRep jobs, leading to some layoffs and others being reassigned to other clients. Jawbone cites "restructuring" of its customer service for the partnership change.

In addition to its financial issues, Jawbone's website is curiously out of most of its inventory. All of its fitness trackers, including the Up4, are listed as "sold out" and are unavailable for purchase. Another source familiar with the NexRep-Jawbone relationship claims in the report that Jawbone shipments have slowed in the past few weeks and have nearly come to a halt. Because of this, NexRep employees assigned to Jawbone couldn't fill replacement orders that came in from complaining customers.

Both of these issues point to major problems for Jawbone as a company. An August report by The Information suggested the company has considered putting itself up for sale, and Jawbone has reportedly been developing a medical-grade wearable for quite some time. The company has sold part of its speaker business, but the fate of its wearable business seems more uncertain. Jawbone made a name for itself first with Bluetooth headsets followed by its slim-and-sleek fitness and sleep trackers, but the company hasn't been able to keep up with Fitbit's slew of new devices, much less with Apple and its new watches.

Fitbit also won a recent case that Jawbone brought against it, which claimed Fitbit "misappropriated" trade secrets from Jawbone. The International Trade Commission came to the conclusion at the end of last month that Fitbit did not misappropriate any secrets, following a decision that eliminated all of Jawbone's patents that were associated with the case.

Update, 2:15 p.m. EST: Jawbone responded to Ars' request for comment with this statement: