Keeping the names of the Malaaikah

Q: I named my son Mikail. He is now 1 month and 9 days old mashallah. I am confused regarding the name Mikail as people say it is not right to name a child with angel names. I see that there are also people named as Malik (also an angel). I have registered my son as mikail already. I need clarification if I can or cannot maintain the name Mikail (many ways of writing the name also I found but all stand for the same angel). Please help.

The meaning of Huda and Hannah

Q: May I please ask the correct meaning of Huda? Is it a girls name? Does it originate from the holy Quran and were there any sahabiyaats (Radiyallahu Anhunna) called Huda? Also the meaning of Hannah and where it originates from and of there is was anyone pious or a sahabiyaat (Radiyallahu Anhunna) named Hannah?

Using paid WordPress plug-ins which one received for free

Q: I am creating / developing my ecommerce store (on wordpress) selling various products online. It requires some Plugins / Extensions to be installed which are PAID. I am enrolled in a course (on Udemy) where my tutor gave me all those (required) plugins for FREE to use them on my own ecommerce site.

P.S: I don't know whether my tutor owns them or he grabbed them from somewhere else. I did sent him an email asking that but haven't heard from him. If I use those plugins on my site, and the income which will be generated from my store will be Halal or Haram? Can you please guide me on this?

Talaaq

Q: My husband was upset at me because my father parked in parking spot outside. He kept saying you should tell me when he parks and I kept saying I didn't know he parked. Eventually I said that let me go to my father right now and tell him please don't park in his parking, hearing that my husband got upset and said that if you tell him then I will give you talaaq. Hearing that, I didn't go in the room. Later on my father came to me and asked why my husbands upset, on that I said that you parked on his parking spot. Does this issue a talaaq?

Maintenance of children after divorce

Q: If a woman who is divorced has two daughters; 21 and 18 years. The mother is a teacher and working, thus earning and seeing to the needs of the family. The father has no contact and does not support his daughters.

1) Who's responsibility is it to see to the needs of the two daughters?

2) In the event of the father passing on, who is next in category to sustain the daughters?

3) Can zakaat be given to them to sustain their needs currently?

4) Is it the responsibility of the mother to sustain the daughters, albeit the two daughters have already passed the age of maturity?

5) What/When will the two daughters be eligible to be aided with zakaat for their needs?