Well, you are quite the sweetheart (or rather, I probably should have scrolled back properly earlier). Earlier, it seemed to me as if the developer was unquestionably in default and had long since acknowledged the consequences for him, namely to cover your replacement apartment costs. Now, looking back, it appears that the construction delay is apparently due to the start of construction being overdue for more than a year. Accordingly, you should have noticed the lack of installment demands for ages, indicating that nothing is progressing. Has the developer been writing his amusing emails all along from the palm beach of a non-extraditable country???
I therefore take back everything I said earlier. Upon closer examination, this thriller reads to me as if, apart from a first installment on a specifically named apartment in a pipe dream, no progress whatsoever has been made. Could it be that the "delays in the building permit" stem from the deposits being squandered in a brothel or casino, and the building authority isn’t even touching the file without fee payment?
Check the insolvency announcements and discuss with your lawyer accordingly possibly the topics of "criminal complaint for fraud" or "third party petition" (in insolvency proceedings). I see your problem least in any hostile prices for inspections. Or did you withhold "something" in your latest update today, and there have already been noticeable advances and only the readiness for occupancy is still pending?