File Open not finding/displaying a file

Hi! Using Classic (6.0.629.0-w 18-Feb-2021), on the Web, in Chrome (Version 88.0.4324.192), on a Mac (MacOS 11.1 "Big Sur"), File Open only displays 30 of my files, I can't/don't know how to get it to load more (I searched the Manual, found the doc about Open, but it gives absolutely minimal info, and at the bottom of the page, it says that it's for GeoGebra Version 5.0; I tried unsuccessfully to find the Manual for Version 6), and searching for the file--I know its name--doesn't bring it up (indeed, search isn't even bringing up any of my files with a partial match, even though the default 30 it shows without searching all match my partial search). Is there a save limit of 30 files I didn't know about, i.e., have I been writing over older files, without warning, each time I save a new file? (I thought that as long as we share our files, i.e., don't make them private, we have unlimited free storage; or did that policy change at some point?) If there isn't such a limit, in which case I should have many, many more than 30 files saved, how do I get Open to to show me more of my files. And regardless, how do I get Open's search to find my files (again, the default display is showing me files which "disappear" when I type into search a partial match)? Finally, how do I specify that when I want to look at the manual, I want to look at the version for GeoGebra Version 6, not 5? Thanks!