When I try to add a new email account to my Zoho, it says "current password invalid"

When I try to add a new email account to my Zoho, it says "current password invalid"

https://help.zoho.com/portal/en/community/topic/could-this-product-get-any-worse-or-any-more-annoying!!!

Zoho Accounts  ->  My Email IDs  ->  Add New Email
I add my email address and enter my current password...
I get error: "Invalid Current Password"

Zoho Accounts  ->  My Email IDs  -> Link Accounts --> Add New Email
I add my email address and enter my current password...
I get error: "Invalid Current Password"

I KNOW for sure I'm entering the correct password.
Seems like this problem happened 4 years ago and still plagues this service...
Help, anyone? 

///Message in a bottle...I'm sending out an SOS