How to transfer images folder from Google Drive to Pinterest?

Question

Browsers

Hello,
I recently started using Pinterest to organize game references. There was a problem, such that I used to store everything on Google Drive. Now I don’t know what to do, I would like to transfer it to Pinterest.
I tried the official extension from Pinterest, it takes a picture, opens a dialog, but when I try to pin it to the board, it says that the picture is not valid.
Yes, and transferring one picture at a time is somehow not very good, maybe there is a solution for entire folders to turn them all at once into a separate board on Pinterest?