Zerotier Adaptor

I have openwrt installed on esxi and it works fine.
When I installed Zerotier I get a problem.
When I check ifconfig I can see the adaptor zt0 but After
I connect it on zerotier site it disapered.
When I disconnect it from zerotier site and restart the openwrt
it comes again.

Please help

These sites may be more helpful: