New message from Cost and Management board "You have exceeded your Free Plan usage limit for Services 2"

Hello, today I got a new unexpected message on my Cost and Management board saying "You have exceeded your Free Plan usage limit for Services 2".

I looked into it and here is what clicking the link has shown

My guess is it's the second row? But what does this actually mean? I remember setting up a new ebs volume in my C:\ disk. I know I also have 100gb or so on the D:\ disk but everytime I log out and log in again it pretty much deletes everything I saved on it and didn't know how to set it up so it could save my files and not delete them everytime. That's why I resorted to the ebs in the first place. I'm guessing the warning relates to this volume somehow? I know I have to pay something like 10-11€ (1€ for every Gb), that's fine. What I am worried about is that this somehow means I have exceeded that ebs volume capacity? This couldn't be tho, as the size is fixed and cannot be controlled from within the virtual machine but only from the aws console. So what is this complaining about? Please help me clear my head, I wouldn't want to wake up having to pay an extra plus because of this :(