Handwritings dissapeared on samsung notes

[Baconpancake]

Here's the problem. I was using the Shared notes function with my team so we can edit and add idea on it anytime. But recently when I opened the notes, some of our handwritings and drawings just disappeared. The jpg file and typed text still remain, when I'm trying to print it as pdf, the handwritings aren't showing also. The devices we are using are #Samsung S9feand a ##A8 series. Both of us face the same problem. Pls help thanks.