I posted my reply in your existing thread instead as still about Zigbee stability and the total amount of Zigbee devices that should be able to connect → Zigbee Utilization 90%, normal for 130 devices? - #15 by Hedda
While that reply might feel like a lecture I honestly think it will clear up a few essential misunderstandings and explain how should should go forward to solve your Zigbee problems.
If you do ignore that explanation then at the very least recommend read and try to follow the tips posted in my best practice guide for Zigbee which have helped hundreds if not thousands of others with similar Zigbee issues → Zigbee networks: how to guide for avoiding interference and optimize for getting better range + coverage
That best practice guide contains prerequisite actions that should be taken before even starting to troubleshoot Zigbee issues, and if you choose to not follow those best practices then it is your problem, but I strongly suggest that you try to listen to the advice given when asking for help.
Why otherwise ask? Help us help you!
If you do not first follow the best practices then
Off-topic but another lecture you might want to consider reading and take at heart before posting more comments like that in these hacker-type community forums → How To Ask Questions The Smart Way …especially the sections about “Dealing with rudeness (keeping cool)” and “On Not Reacting Like A Loser” based on that specific comment and you starting this new thread).
We are trying to support you and others, but understand that this is a community of enthusiasts and hobbyists volunteering our spare time to try to help and trying to impart knowledge we feel is needed is part of that. You are getting this help for free so do not expect the same treatment as when dealing with paid support from a commercial company with employees working in a helpdesk.