So as you can probably see i have been following this tutorial on how to make a donut in blender since i am new to the program. It all worked fine until i suddenly could'nt use the weight brush on the top half of the donut (the icing), which i found out was caused by the fact that only the edges were editable, since it would only let me use the brush there. Really hoping someone can help.
Object Mode always displays the entire mesh, even if you have parts or the entire mesh/vertices/edges/faces hidden by using H.
So coming back later in object mode and switching in edit mode to find that parts are missing/not displayed, is solved by pressing Alt+H, which brings everything hidden back.