Working during iddat

Q: I've just got a divorce. Me and my ex have been living separately for the past 2 years but he refused to give me a divorce. He gave me the divorce yesterday. I know I need to sit in iddat, but I wanted to ask if there's any rules on work. I have about £800 expenses a month. I live with my parents but I do not think they can pay my expenses for the next three months. I work at an office full time and also have a part time job as a care assistant which requires travelling from house to house. I'm not too sure what to do and if I'm still allowed to work or not. Please help me out. 

Selling one's children's gold to purchase something for them

Q: My two small girls ages 5 and 6 were gifted 18 carat gold pendants. My husband wants to sell them to buy beds for them as our 9 year old is sleeping on the floor on a mattress.

I'm against it as I told him that it is not permissible to do so as this was gifted to them. He's refusing to listen and said to ask Mufti saheb the above. Please advise.

Partnership in importing goods

Q: Zaid went to China to buy goods for 1 million. On reaching there, Zaid found out that the goods with the freight would cost 1.2 millions. Amr is ready to help him with the 0.2 million. Amr would like to know how he can join the business of Zaid so that he also can get some profits. He was told that he can't do mudaaraba as the transaction was already initiated.

What "aqd" can he do in this case? Shirkat? If so, are there any conditions attached to it for the aqd to be correct?

Getting "cash back" from Google Pay

Q: There is an app of Google known as "Google pay". It's used to transfer money from account to account. But every time when this app is used for money tranfer, it gives some money back as "cash back". For example... if I transfer 1000 rupees to Zaid's account, Zaid will get the full 1000 rupees and I will also get 10 or 20 rupees as cash back. Is this 10 to 20 rupees halaal?