Purdah with non-mahram family men

Q: I would like advice regarding the following matter:

In our family, it is a norm that the women who are in parda don’t make parda from our family men but they make parda from everyone else. I did the same when I first went into parda but Alhumdulilah with the encouragement from my apas, Allah granted me the taufeeq to wear parda correctly (i.e for all ghair mahram men). 

My family is not in favor of this decision.

1. An elder has reprimanded me for making parda for my mothers sisters husbands due to the fact that I cannot marry them. What should my reply be to such statements since it is an elder? They adamantly tell me to take it out and sit on the eating table.

2. If my uncles (non mahram) enter the kitchen or the area where the females are and they greet me I reply. I avoid any type of conversation with them. But someone had brought it to my attention that this is hurting their feelings as I use to treat them as if they were my fathers from a young age. Am I correct in what I am doing?

3. Some people say that it is sufficient to just avoid talking to all of these non mahram family men and not wear parda in front of them if ones family is like how my family is. Is this correct?

Kaffaarah for breaking a vow

Q:

1 .I made a vow for not watching explicit things but I can't remember if I said it out loud with Allah's name. Maybe I did. I remember thinking "if this happens then I'll never do this"I was not aware of the ruling of vows at the time.

2. I also made several promises to Allah about not watching those things and I ended up watching those thing once or twice Astaghfirullah. Do I have to expiate separately for this or does doing it once complete as they are both about not doing the same act.

3. In all the promises and vow I specifically said about not watching pornography but in the recent promise I also said about not watching anything sexual. Yesterday I ended up watching a music video that was of a sexual nature for like 5 seconds before remembering the promise and turning the video off. Does this break the promise and is this promise considered a separate type of promise requiring separate expiation?

Doing business with Amazon

Q: While doing wholesale business with Amazon, one buys the product from a seller in another country and then drops it off at Amazon. We shall be advertising the product and Amazon will be responsible for storing, packaging and shipping of the product and it will charge us fee for these services. Is this method of sale correct.