Long story short: MaxBounty stores your passwords in an unsecured way. Who knows what other data is unprotected.
You know when a company doesn't take the necessery care if you say "I forgot my password" and they send it to you in an email.
If your password is stored properly, not even the company can read your password.
That is not the case with MaxBounty, I have written to them to get them to fix it and take more care in encrypting sensitive details like this but if someone with higher influence than me sees this than I encourage you to do the same!