my website appears blacklisted with security threats please help me fix it

Hi, my website [login to view URL] somehow appears as blacklisted during few online searches i made, i am not sure why this is happening so i need somebody to look deep into it and find out why and remove the blacklist and put it back in safe mode. i had problems before with my SSL certificate and seems my donation page was blocked so i removed that page not sure if that's still the main problem, anyways need somebody that understand and removes it asap