SSC = about suing before the "deadline"
and what evidence do you have for the agreed upon date for the start of the GPT? So far there has been nothing to indicate that a signed dated agreement was made for a start date of the GPT.
The agreement called for the test to be started well before the research testing in FL. If there was an extension then there must be some signed agreement that the work in FL was actually was the GPT and the date agreed upon. So far nothing verifies your assumed start and end dates for the GPT:.
In short the deadline for payment was to be after the end of the GPT with signed agreement of its start date and fulfillment of other criteria COP, receipt of a report from an agreed to ERV, verification of 350 continuous days/ not parts there of, data taken by the ERV- (i.e. not Rossi) and other items.
So what proof do you have when the GPT was started when you claim because so far IH has denied they approved the research testing in FL was the GPT and the agreement specifies both parties must agree to the GPT.
All this could be avoided if Rossi produced evidence of his claim of an agreed to GPT and ERV and some verification of a start date.
As it stands there is no evidence when or if the GPT started. One could equally claim that it started at Penon's email and thus it did not fulfill the 350 within 400 days of such a start date. I am of the opinion (passed on only partial evidence) that the GPT was never agreed to by IH.
It also seems that the ERV never took the data himself but only the information Rossi told him.