Thanks for the screenshot. Something definitely doesn’t look right there.
I wasn’t able to replicate this problem on my test site running Sela with Jetpack.
Could you try again, this time with just a short paragraph?
You might also want to temporarily deactivating all your plugins to make sure nothing is interfering with the layout. If everything looks normal, reactivate them one by one until you find the culprit.
– the three “areas” where i could put an image and content per area is not there (although i can probably add this through pagebuilder? or i may be mistaken)
You may be refering to Sela’s front-page widget areas, which you should be able to see under Appearance > Widgets, marked First Front Page Widget Area, Second Front Page Widget Area, and Third Front Page Widget Area.
You can learn more about how to set up Sela here:
https://theme.wordpress.com/themes/sela/