If you unsubscribe from SmoredBoard Pro, you’ll keep all your profiles and the order of your sound buttons. However, you won’t be able to add or or customize sounds in any of your extra profiles.
You’ll be able to choose one profile to remain fully editable — just like a free user — while the others will be locked for editing.

you will no longer be able to use any of your audio output profiles except for default

you will no longer be able to use any of your keybind profiles, global or profile based except for the default profile based profiles