Vault empty

I have a folder full of markdown files. When opening this folder with Obsidian, nothing appears. Any idea why? My files are .md, and mostly created with Typora.

Edit: my files contain links of the form [[filename]]( with my filename all starting by a UID.

Edit2: actually I can search my files and their names appear, but I cannot open anything and I can only face a black screen. Frustrating.

This is not a valid form [[]]() maybe you mean []()?

Can you open the help vault?
I suggest reading the help documentation

If you still think you have a bug, open a new bug request following the bug template and attach some screnshots\gif demonstrating you issue.