Making an effort to repay the debt of one's deceased brother

Q: My brother passed away a few years ago. I knew he had a debt when he was abroad. But I don't know the whereabouts. What can we do for that? 

It's not really possible for us to re-pay his debt as we are not a wealthy family. What can we do for my brother to save him from the hell fire? Sometimes my brother comes in my dream suffering from pain or as tortured telling me to save him. What can I do for him?

Real estate agent taking agency fees

Q: I have two question regarding the agency fees for real estate.

1. Is the agency fees haraam for an agent if he shows numerous real estate properties to numerous clients and then one of the clients, rented or bought a property and the agent takes 10% or so amount of the property sold or half month or the rent for the commission of the agent? 

2. Is this agency fees is haraam for the client to pay to the agent?

Using a continuous glucose monitor

Q: I am, as per blood results and my doctor, on the brink of Type 2 diabetes. One of the options to try and reverse this is to use a continuous glucose monitor. What is the position with this in terms of ghusl? 

The patch is kept on for 14 days at a time and then changed. Please advise what is the position in terms of ghusl as if we are required to remove this in ghusl then it cannot work as each patch costs almost R1500 per 2 weeks.

Putting on ihraam in Jeddah if going there to meet relatives and staying there for a few days

Q: I intend performing Umrah for my deceased parents. I’m travelling to Jeddah and staying for 2 days with my niece who resides there. After I finish Umrah I will go back to Jeddah for a week and then to Doha for 2 days. 

When and where do I don Ihraam? 

Can I perform 1 umrah for both my parents?