The best way to get support for your kit is to go to the support forum at https://www.tubeclockdb.com/forum/12-arduino-nixie-clock-kit-support-forum where you can ask for support or see answers to common questions.
Go to the forumYou can read and browse the forum without logging in, but if you want to post, you will need to sign up. Click the button below if you need a forum account so you can post: