Rewards from credit cards

Q: You have a fatwa on your website that states using rewards from credit card companies is impermissible (ebucks); is using rewards from a departmental store the same thing if they give you 15% discount when you purchase their products on their credit card? Does it make a difference if the actual funding of the credit card is done through a separate financial institution?

Irregular bleeding

Q: A lady doesn't have a fixed time for her periods. It sometimes comes after a year, sometimes after six months sometimes after 3 months. The days it last for also vary. Sometimes 5 days, sometimes 10 days, sometimes 12 days. How many days does the husband have to wait after it ends before he can have relations with her?

What name should be used when performing the nikaah of a revert

Q: My fiance is a converted muslim. His father was a Hindu. On the nikah nama what name should be used in place of fathers name? My family does not want to use a Hindu name. Can we write a Muslim relatives name? Will the nikaah be valid if using a fake name? What name should we use while performing the nikah. Can the fathers name be avoided?