Has anyone experienced this on Bookswagon?

I have 4 pending orders on Bookswagon. As is common knowledge, the total process of shipping and delivery for bookswagon is a lengthy and sometimes tedious one. Accordingly, 2 of the 4 books are still in the processing phase while the other 2 have been shipped but not yet delivered. Everything was alright till now. However, all of a sudden, since yesterday, for one of the books that have already been shipped and for one of the books that are in the processing stage, the app is showing the phrase 'Unknown Product' instead of the names of the respective books with the accompanying ISBNs on the order list. Has anyone experienced this? Is this a mere technical glitch or should I be worried? Responses are requested.