These resources are abundant and high-quality. But I am using version 4.26, can I add it to the 4.24 engine and open it with 4.26? Will this be a problem? If you can update, I am willing to wait, because this resource version is better than other packages can be purchased.
Let me ask one more question, can it be commercialized? (Just in case)
You can add it to 4.24 and then migrate the assets to 4.26. It’s worth a go. However, there’s probably a good reason why Epic have not put 4.26 in the specs. Probably to do with deprecated nodes, which some things wont work.