Invalid ZSC Key when trying to sync contacts in Campaigns

Invalid ZSC Key when trying to sync contacts in Campaigns

Hello,

I've really messed up, I think. I'm trying to sync my contacts into Zoho Campaigns. I had problems earlier and decided I should start again. I deleted everything and regenerating the ZSC Key. Big mistake. Now I'm getting an error message. Screen shot attached.

Thanks,
Margery