Getting old CR-10 working

CR Series Creality CR-10 Series
1

We have an old CR-10 3D-Printer at the school where I work.

I think it is a CR-10. It haven’t been used in maybe 10 years.

It starts but it seems hard to load the filament. I put in the filament and tries to turn the knob but not much seem to happen,

2

can you send like a picture of the knob and the filament type

3

It might also be that the filament is to thick for the printer