Dynamic shops change quickly. Preserve the complete URL, time, time zone, visible countdown, product data, terms and path to the basket. A screen recording can illustrate the process. Keep original files or technical response data where available so that the illustration can be checked later.
A chronology helps with repetition. Record when the timer started, reached zero, reset and what terms applied afterwards. Note whether the process was identical on different devices, in a private browser window or from different regions. These details help distinguish a single display error from a recurring campaign logic.
When a challenge arrives, the business should preserve the original letter, challenged version and internal approval from that time. The article on a UWG cease-and-desist letter explains why the letter, claim and requested undertaking should be assessed separately.