DKIM issue

DKIM issue

Hi there 

Yesterday I bought a domain and then used to make a professional email address with zoho it did work fine but now when i send email to anyone it shows like spam to receipent. I tried to search online for this solution but I dont understand I used DKIM problem solution but its not working please help me out and fix this issue for me as I have very important business emails to send.

Thank you so much
Kind Regards