Can't connect sendgrid plugin to bubble

Hey everyone,
i’m trying the plugins on bubble for a new projet,
I need to use Sendgrid on my project so I did everything i’m supposed to do like :
Make a Sendgrid account,
connect api key to bubble (on Api key and Api key dev. fields)
create a template

For testing, i wanted to do a simple thing :
a field to write an email adress and a button for sending the email

here is the link :

Someone could tell me what I did not right ? Big thanks :heartbeat:

PS: I already searched on forums, videos etc… but i didn’t found a solution !

Since the 6th of April, you also have to verify your sender email address as detailed here.