Campaign start earlier than expected

Hello,

i have a question about the user awareness campaign please:

we just started a campaign last friday and set the starting date on today (10-17-'22 / 10.00 am) with delayed email outpoot for the different people.

The problem is: it sent the emails already on friday, just 1.5 hours after we finished creating the campaign.

What went wrong? Do you have any ideas?

My best regards