Musallee looking inside the Quraan during Taraweeh and correcting the Imaam

Q: Please advise with regard to the following:

Is it permissible for a Musallee to look inside the Quraan during Taraweeh? If not, is there any social occasion in which it would be permissible?

If we are 3 people in our Taraaweeh Jamaat - the Imaam and one Musallee is a Hafiz, but their dhor is not so good and plan to improve it by performing Taraaweeh - will it be permissible for the Musallee to look into the Quraan during the Salah?

Income of a salesperson who swipes customers credit cards

Q: I work for company called NEXT who’s CEO has political support for Israel.

Also the company provides a credit card for the customers which has interest in it as well. As I work as a sales girl I have to be on the counter/till while on the till sometimes I have to take the credit cards from the customers as their means of payment.

Can you please tell me if my earning is halaal?

Spouses having a separate entrance to their section of the house

Q: I live with my in laws, and though I have a separate portion, bedroom, kitchen, and bathroom, my husband does not allow me to use the separate entrance or exit of that house portion. He forced me to use the door outside that goes through his parent's portion of the house.

Does Islam allow me to have a separate entry and exit from the house portion?