I found a workaround for errors with loading the vwii system menu on rednand:
Make sure the wiiflow channel is installed on vwii.
install the wiiflow wii u forwarder from:
open the forwarder and wait for wiiflow to load. then exit wiiflow and the vwii system menu will load!
Game : Super Mario Bros. Wonder
Request : Invincibility
Title id : 010015100B514000
Build id : CD6E42AEE7934F4D
Version : Super Mario Bros. Wonder v1.0.0
The universal minecraft editor was replaced by a new paid tool called universal minecraft tool. I have uploaded the old installer to my Google Drive and added it's link to the OP.
I may try the new ram site, and download more RAM to my Switch. Not sure if ddr3 is the right ram
for it tho. Edit- no it uses floppy Ram, just like @AncientBoi