Sorry to hear that you're having trouble with H910 in Studio One.
First, I would make absolutely sure that you having installed the correct 32 or 64-bit version of H910 for the version of Studio One you are using (32 or 64-bit). Since it looks like you are using a custom location for your VST plugins, make sure that when you set this path when you install, you install the applicable version.
Second, please make sure you have the most recent version of the iLok License Manager: https://ilok.com/
Last, you could try going to the Studio One VST preferences, and make sure that "Scan at Startup" is selected.
Let me know if the above steps don't solve your issue.