Hi, 
I'm trying to send a newsletter to my subscribers, but seems is not working - or maybe I did some wrong steps re. upgrades.

I'm the admin for this account, no other person is using Zoho for my campaigns and I did not access the platform during last month. Today I found out some upgrades are needed - I don't understand all the necessary upgrades, as I am not a technical person - that's why I think maybe I did something wrong there.

Did someone noticed today if sending campaigns is working?