The importance of Salaah

Q: I have many health problems including back pain, incontinence, tiredness, mentally and physically weak, etc. I spend most of the time resting on the bed. Doing wudhu and praying 5 times is very difficult for me. I feel unwell most of the time, doing wudu, praying salah take very long time and I become tired and stressed out.

I don't know any Muslim doctor to ask this and no one else can help me do wudu. Because my illnesses like back pain, tiredness go worse by wudu and praying, can I do tayammum instead of wudu? And pray salah sitting? I tried doing tayammum and pray sitting but still I struggle.

Q: I offer namaz alhamdulilah but I live in a shared flat with my cousin and he sleeps all day and works night shift and doesn't offer namaz. He is 10 years older than me. I have told him a few times to offer namaz but he doesn't. Will I get azaab (punishment) as well?

Q: I offer salaah regularly Alhamdulilah but I had a few questions in this regard:

1. Although I don't do hijab but whenever its salaah time I feel restless to pray. I am married and prefer to go out only after magrib so that I don't miss salaah but my husband says it's ok if you miss a salaah for which you can offer qadha later as my urge to pray sometimes causes hurdles in schedule of shopping or doing grocery shopping. Please advise on this.

2. I work in a school and offer Zuhr Salaah during working hours. Is it okay if I do the fardh of wudhu only and offer 4 fardh of zuhr only. Kindly advise on this.

Q: Alhamdulillah we have been married for 3 years. My husband has been struggling with his Salaah. He's not been punctual and misses a lot of his salaahs. It really gets to me as Alhamdulillah I try my best to be punctual. Sometimes I feel like I can't take it anymore. Please advise as to what I should do in this situation.

Q: A woman assists by feeding the poor with zakaah donations of food, hampers and vouchers, clothing etc. The problem is that this person does not perform salah at all. She's not listening to me reminding her. How will this affect this person when leaving this world in this state?

Q: At what age does salaah become compulsory upon a child?

Q: I was a Christian but now I converted to Muslim. I am living with a girl I didn't marry. I know its a big sin to commit zinaa but I did not have money to marry my woman who is a Muslim. My question is, can I still pray my five times salat in this situation?

Q: What is the ruling of the one who repents from kufr and fails to pray salaah?

Q: Is qadha prayers accepted by Allah?

If I go out shopping or to a wedding, can I pray qadha when I get home and is it accepted?

Q: My parents are forcing me to miss Salah for Education. Is it correct! I am admitted to a college where I am not allowed to pray salah. I am missing Asr and Maghrib Salah every day. On complaining this to my parents they are not listening to me and forcing me to go to the same college. I am not allowed to pray at my college or go out of the college. Every day I am praying Asr and Maghrib Salah at night after Isha Salah as Qaza Salah.

Is it correct that I miss Salah for Education? Should I obey my parents? They are blackmailing me emotionally. Should I change my college?