Build/Compile button has disappeared

Hi, I’m pretty new to VS Code & Platform IO, but I’m trying to compile some 3D printer firmware but the compile/build checkmark in the bottom left corner has disappeared and I cannot figure out how to get it back. Thanks

Try opening the Marlin folder which has the actual platformio.ini, not the upper Firmware folder.

It doesn’t matter which folder or file I try to open, I feel like it’s a setting in the actual VS Code software not the Marlin software.