I was able to identify a few potential reasons why Google could have suspended the listing, and fixed them. Much to my delight, after submitting the appeal, Google responded a few days later:
Thank you for contacting Google My Business team about your business information being removed from Google Maps!
Based on the information provided, I'm happy to confirm that we were able to reinstate the listing for you. No further action is required on your part to verify it at this time.
Once the listing is live again, it may take a few days for it to start appearing on Google. You can check to see if your listing is showing by going to maps.google.com and typing in your business name and address.
Feel free to update your business information as necessary through the "Edit" option in your dashboard to ensure the data is correct and up-to-date. In order to ensure that your business information does not get removed again, be sure to always follow our policies and guidelines for representing your business on Google (https://support.google.com/business/answer/3038177).
Google My Business Support
If all else fails?
The next option is to submit a new listing. I know this is not a good option, because you will lose any of your existing reviews. However, if Google would not respond to any communication, then this would be the next route.
If you need help with managing your business on Google Maps, please contact us today!