Organising a monthly Qur'an khatam on whatsapp

Q: I am part of a whatsapp group and we have decided that rather then just chatting and posting articles and news, we can do some good deeds together as a group. So alhamdulillah we have started a monthly Quraan Khatam. There is absolutely no force on those who can not manage or be part of the khatam. If anyone cannot manage their para for the month it is passed over to someone who can recite it. After the khatam is made we make the intention of isaale thawaab for all the marhoomeen. After a few months of this khatam which was going very well, somebody said to me that this practice is bid'ah as we have stipulated a time frame of this amal to one month and that we should stop this practice as it has no basis in deen. He also mentioned that our actions needs to be done with sincerity and not for show so it should not be done as a group. I do not want to perform any innovations in deen and I am really concerned. Some of the members are such that if it wasn't for this monthly khatam they would not have opened the Quraan not only for the entire month but rather for the entire year. Should I inform the members of the group and stop this practice or should it be continued?

Business started with haraam money

Q: I want to know that is the profit made through halaal business that was initially started by haraam money is halaal or haraam to use. Example: If I use haraam money and start a halaal business and I earn some profits from that business so that profit is halaal or haraam? Please let me know the Islamic rulings about this issue.