Hi Joël,
just another idea: check under “Dashboard” > “Appearance” > “Customize” > “Static Front Page” > “Front Page Displays” > select “A Static Page” > “Front Page” > from the dropdown menu select “Home” and > “Post Page” select “Blog”
Another option to clear that might be “Setting the Static Front Page” at the end of this documentation.
In case of failing any longer I would recommend to ask Daniel to get the solution. Good luck!
Uwe