TLDR, seems like you’ve got it up and running. Firmware updates are likely worth making sure you’re able to download at some point. When asking for help online, especially on reddit, consider the motivation of the person answering the question. Are they answering the question or defending their team?
Then, I think you’ll be fine. I’d still attempt to get it registered, both for firmware updates as well as recalls. Also worth noting that in the world of 3D printers, especially given the size of the online 3D printing community and their tendency to use open source software, means updates tend to deliver real improvements and new features that the end users are looking for and not the fluff that no one wants.
But as long as you can get files from your computer to the printer, you can worry about getting it registered later. Also, I’m just assuming you have to be registered to get the firmware updates, you might not. The printer might pull them from the internet regardless of whether or not it’s registered, I’m not sure.
I mentioned OctoPrint and Orca Slicer upthread, and for partially the same reason, that they may even be better than the factory interface. As I said earlier, I’m unfamiliar with Flash Forge, at least beyond being aware of them, so this might not be an issue, but one of the nice things about using popular 3rd party, open source, software is the size of the community. When I had my Ender, I could seek help in the Ender communities, but also the general OctoPrint communities. Some of my questions may have been answered by people that don’t own Enders, but they still know OctoPrint well enough to help.
One last thing for the OP to keep in the back of their mind when looking for help within 3D printer communities…they used to be amazing, now not so much, at least on reddit. A good chunk of my knowledge has it’s roots in the Ender3 subreddit. 5 or 6 years ago it was a great place to learn. Then a few years ago I got a new printer, which is an improvement in almost every possible way, except the online community. The Bambu sub was, and I believe still is, a dumpster fire. Don’t dare say anything negative about their printers or you’ll get downvoted or people will come right out and post nasty comments about it. And by ‘anything negative’ I mean something as simple as “Yes the printer will sound like it’s rattling itself apart when you start a print, it’s 100% normal” and a full year later someone downvoting my comment and saying “Worst comment ever. So off the mark lol”.
That doesn’t make me too keen to continue participating in that sub. Also, it means tools like that are likely answering questions, and probably incorrectly. Looping back to third party software, that interaction was in a Bambu sub and it’s why I usually find non-Bambu specific communities to get help with print issues that aren’t directly related to the Bambu brand.
Anyways, my point being that you need to pay attention to what people are saying online. Are they answering questions or blindly defending their brand? This is a problem I’ve been seeing for the last few years and a popular youtuber, Teaching Tech, even commented on it in a recent video.
PS, as you’re learning more about the hobby, Teaching Tech is one of the best channels you’ll find for this. His videos are very in depth, but very easy to follow and cover a very wide range of topics from absolute beginning to very advanced.