Can I connect Vont smart bulbs?

I have multiple Vont smart bulbs and plugs. The company has gone out of business. The devices still work through the Vont Home app but no longer work via Alexa. Is there a way to use Home Assistant app to control these devices via Alexa? If so, how do I proceed? I am new to this app and never even heard of it until five minutes ago, Thanks in advance for any help.