The app that synchronizes multiple lemmy accounts so you can migrate and keep backup accounts across instances, it’s opensource and free, currently working in android and windows.
It’s in homologation now and anyone can test, any feedbacks are welcome as always.
If you find any bugs please report
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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.