Pinecil V2 screw broken!

[Carol8]

Hi,

I have been using my Pinecil V2 without issues for half a year now, but when changing the tip I managed to break the screw after tightening it . In the picture below, I have photographed the broken screw.

I also tried opening the case and removing the tip, but I could not do that because the broken screw was tightened and was holding the tip in place.
What can I do? How can I replace the screw?

[Carol8]

I see that the picture did not link well, here's the actual link: https://imgur.com/a/YctiSOe