VST Connect Pro 5 has migrated to Steinberg Licensing as of version 5.6. If you have not already paid to update to VST Connect Pro 5, you must do this to transition to Steinberg Licensing.
It is unclear whether the RND plug-ins will move to Steinberg Licensing.
All other currently sold software products should have transitioned to Steinberg Licensing. If you do not have vouchers for HALion Symphonic Orchestra and the loop sets, re-register the eLicenser(s), run Maintenance in eLicenser Control Center and then check My Steinberg over the next 24 hours to see if vouchers appear. If they do not, contact Steinberg Support.
You’re probably out of luck with Neo Soul Keys, as that was discontinued some time ago.