I purchased a Tufina Theorema Automatic Macau (T3011-9) on June 2, 2020. Order #T24054 The automatic mechanism no longer seems to function properly, and I want to know what course of action is possible to either have the watch serviced or replaced under the warranty.

The winding mechanism seems to be able to wind while I'm wearing the watch and keeping it moving, however after wearing it for several hours, once I take the watch off and set it down, it stops keeping time within a few short minutes. As soon as I pick it up and start moving it again it starts to keep time again. This behavior abruptly started on Friday, February 12, after wearing the watch all that week with no issues.