I'm guessing making up the numbers for the Balance Sheet was too much of a task for them.
I wonder if they delivered the same numbers to KRS (national registry court). And if KRS verified it and made publicly available. I'm going to check it soon.
If anything, they'd have to file 2015 accounts for the full year (or for the period from incorporation to 31 Dec 2015). I don't think any company is required to file interim reports with KRS.
Also (assuming it all works similar to UK's Companies House) KRS won't verify the reported numbers, at best, they could reject the statements if they don't meet the required format.