the Pyramid does not required an SD card to be inserted for it to ‘work’.
(it only uses it for projects and saved settings)
so id test that to check its only an issue with the sdcard.
then Id backup the sdcard to your computer.
then format it.
then try loading and saving projects.
finally then just copy the project over to the sdcard, and see if its project that is the issue.
(rather than the settings)
sdcards do sometimes go ‘bad’ , but it’s not that common. (btw: id also test/clean the adapter, which i assume your using)
its also possibly something in your project/settings - hence why to try a freshly formatted card, and a new project.
if its an issue with the project - it may be squarp can help you out with it.