Can I get a TM30 slip at Central Festival in Chiang Mai, and is a digital TM30 sufficient for visa extension?

The user inquires about obtaining the TM30 slip for visa extension purposes in Chiang Mai. They ask if it's possible to receive the slip at Central Festival or if they must go to the immigration office. Additionally, they seek clarification on whether a digital verification from their landlord is enough to apply for the extension. Respondents indicate that while a digital verification may suffice for the extension at Central Festival, an official TM30 form receipt must be acquired from the main immigration office for proper processing.