updating to WP 5.0

I just inadvertently updated “Real Media Library: Folder & File Manager” which requires WP 5.0. (My bad.)

Now I am not sure how to best fix this.
– update to WP 5.0 and deal with possible piklist errors, or
– try to fall back on the Real Media pre-update

Any suggestion? (Thank you)

I did see this: “Piklist 2.0 is coming soon with full Gutenberg support. Until then, please use the Classic Editor plugin when using WordPress 5.0+.”

But how would I know what editor I’m using?

I do not need Gutenberg support.