Having some problem with this wallet. Two weeks ago deposited coions to my wallet then later logged in and there was nothing, new btc address and zero funds. Contacted support via email and no response, sent a message here to OutCast3k(one of the developers as I see) and no response. Is this project just a scam right now or what? Any chance to get my coins back?

It's an open source project, nobody here has paid anything, we are not a company, if there is a delay in responding it's because we are not heavily funded and there is 1 developer responding to multiple enquiries.
Firstly, I will point out the obvious. We do not have access to your private keys. If for some unfortunate reason our API is struggling to return the correct balance you can import your API key into another wallet.
Secondly, you have provided no information to go on. No email address, no github ticket, no bitcoin address to check a balance.
Finally I don't like helping people who call this project a scam. It's rude, you've contributed nothing, paid nothing and have the audacity to post that.
Edit to add: coinb.in's wallet feature works by generating a set of keys from the login details you give it. Please pay close attention to the login notice in yellow. It states different login combinations will open up different addresses. For example, I could login with the email address
outcast3k@bitcoin.com and the password 1111111111 and receive one address, log back out and log back in the with same email address but a different password 222222222 and get an entirely different address. If the address has changed and your balance is zero, it's because you are not entering in the same details as before. Please don't come here and publicly call this project a scam when you clearly have no idea.