In case you're still wondering. This app can take all your subscriptions from lemm.ee and copy them to another instance. When you switch to that instance and go to your subscribed everything should be on the second instance.
This way you don't have to subscribe manually on multiple instances. I believe blocks will be added as well.
This synchronizes subscribed communities between instances if you have accounts on more than one instance. Connect is for browsing and posting.
Probably not a big deal but your username autopopulates the login field.
It's got to the point some people complain when there isn't DLC. They just want to play the same game forever. Also, paid games with free to play style bullshit. At least as scummy as these free to play games can be you can at least try them out.
Also, DLC is almost a complete misnomer nowadays. Everything is content and is downloadable.
Ok, so ignoring the meme. What is that? I mean, it's clearly a hotdog but what is going on here?
This app would have done step 4 without you having to do it yourself.
As for why to switch instances. It's a matter of preference. The example you gave is a good reason. Obviously if your instance closes you would have to move so it's nice to have a backup just in case