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If you are asking if the kbin.social instance/server can handle your existing content and future content, you will have to talk to the admin.
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If you are asking if the Kbin software can handle your content, sure, the software is only a software. Your data will rely on the capabilities of your hosting provider.
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If you are asking if there are Kbin instances that can handle your content, you will have to contact them individually and find a way to struck some deal.
You can check this list of the different servers/instances using the Kbin software --> https://fedidb.org/software/Kbin
Or, you can host it on your own: https://codeberg.org/Kbin/kbin-core
^_^