Sticky liquid coming out after ghusal

Q: Yesterday I performed ghusal for janabat in the afternoon and urinated two times. One time before ghusal (after discharge) and one time during ghusal and did not see any manni. But after that, the next time I urinated was this morning and some drops of colourless sticky liquid came out after the urine. I also have pain in my kidneys from yesterday. Do I have to perform ghusal again or not? 

Making taubah

Q:

1. How does one repent? Does one have to repent through dua for it to be accepted? Or can one just be talking in a room alone, as if they are talking to Allah?

2. Does one have to be in pure clothes or state for repentence to be accepted?

3. Is it true that Allah doesn't accept forgivenss from someone who isn't talking to another muslim? Does this mean their repentence will not or is not accepted nor will their good deeds? What if the Muslim they aren't speaking to is rude, swears or drinks alcohol and sells cigarettes. What if the person has ego and degraded the other person. Insha Allah they will eventually try to speak to them in the future when they get the opportunity when the time is right.

Being unable to wash one's feet in a basin for wudhu

Q: From birth I have a congenital hip dislocation problem due which I am not able to lift my leg till the height of the wash basin. In most offices, people wash their feet in the wash basins but I can't do that to wash my feet.

Please advice if I can:

1. Do masah on my feet.

2. Wet the complete foot by rolling a wet hand.

3. Use a commode to wash my feet where a Muslim shower is available.

Four people staying in a room which was booked for two people

Q: I stayed with friends at a rented accomodation where in the agreement, only 2 people are allowed to stay each night for around 100$ per night. However, we lied to the owner and agreed that only 2 people will stay while actually 4 people stayed. We didnt think this was wrong since we would only use the accomodation for sleeping and wanted to save money. So technically we broke the agreement and cheated the owner.

What is the best way to fix this as we are afraid that in the akhirah, we will be punished, since we used his property not according to the agreement. If we reach out to him, he may take action against us so we are afraid. Could we pay him the money for the 2 extra people (we assume it will be 50$ per night per person) and give it to him anonymously? Or can we just donate this amount to chairty because we are afraid to tell him.