Bernice E. hmm just opened it up and was able to update all 42 text styles with no issues. Are you getting some sort of error? I'm not seeing any notification in the plugin or on the developer's website about the plugin being deprecated.
Matt J., thank you for your reply. It wasn't loading and I couldn't find it in the plugin list from Figma.
But now after restarting my laptop, it seems to be loading fine and working. Thank you and apologize for the panic caused!