@JamesCyber
First please access the Deco web UI by entering "tplinkdeco.net" in your browser. Navigate to Advanced > System > System Log, select "ALL" in the log type, and save the file to your local computer. Then follow the steps below making sure to attach the logs to the email.
I recommend sending an email to forumsupport.usa@tp-link.com with the following information:
Subject: [Forum Escalation][ID 858908] No clients showing as of 3 weeks ago
Forum Nickname: [User Provided]
Thread URL: https://community.tp-link.com/us/home/forum/topic/858908?moduleId=2424
Model&Version: [User Provided]
Description: [User Provided]
Any Other Relevant Information (Logs, Config Files, Images, etc.): [User Provided]
In the template above please fill in the areas that say [User Provided]. This will open a case with our engineering team, and they will work with you via email.