I am sorry that you didn't get a quick reply/answer to your question.
I can only speak for myself. I did not reply for one reason only.. I did not have the answer to your question. I answer ALL posts that I have information which is helpful and so do others on this forum. I have never noticed anyone being selective and can not imagine why your post would be intentionally ignored. There are many people here who share their knowledge and experience willingly.
I hope that the answer you received from britelite is helpful and appreciated. This is a support forum and you will always find support here.
This is the best advice I can offer about the IF#2; Contact the company/person you purchased it from and ask them how long of a shelf-life the product has and how it should be stored. And then share the information here.