Changing permalinks breaks Bricksbuilder

Hi everyone,
I’m running Bricksbuilder 1.5.7, and only have 1 page and a header template running before I found out that my permalinks were still set to plain. So I changed them to Post name only to find out that I couldn’t edit my template anymore.

I’m running on an NGINX server so Apache rewrite rules aren’t relevant here.
Anything I can do? I’ve tried the following things:
Exporting the header template > change the permalinks > import the template, no luck.
Also making a new template seems to break.

Any help is appreciated! Thanks in advance.

This is now solved, for future reference. I was running on an NGINX server and I needed to change my rewrite rules!