Hey, I'm searching in the UK from Chrome and the three-pack is showing fine for me! What queries have you used? (To see if I can recreate). Maybe worth using a tool like Local Search Results Checker, too, to see if this is happening in locations outside of your area?
New advertising option:
A review of your product or service posted by a Sterling Sky employee. This will also be shared on the Sterling Sky & LSF Twitter accounts, our Facebook group, LinkedIn, and both newsletters.