Section Subtitles larger than should be in mobile view

Hi there! I have been using the Hestia Theme for over 2 years now with no problems until this past July. I do not know the cause, but all of a sudden when I view my homepage from mobile, the all of the Section Subtitles are significantly larger than all the other text. I have tried everything I can think of, such as: restoring my website to an earlier version before the error occurred, uninstalling and reinstalling Hesita and all plugins, turning off plugins to troubleshoot, ensuring everything is fully up to date including PHP and all plugins/themes. I have also tried changing the font size within the Customize tool on the homepage – which at first looks like it will resolve the issue – but when I publish and view the page outside of the Customizer the change doesn’t hold. Does anyone know what else I can do or try? This seems to me like a bug within Hestia or the Orbit Fox companion since the impacted sections are the ones from Orbit Fox. Thank you for your help!

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