DHCP always an issue for me on Juniper srx240

I have posted multiple times about DHCP lease time on my juniper srx240 router

here is my configuration for DHCP lease time

dhcp {
pool 10.10.0.0/16 {
address-range low 10.10.1.28 high 10.10.255.254;
maximum-lease-time 6048000;
default-lease-time 6048000;
router {
10.10.0.1;
}

but yet when the router restarts, most of the hosts lose their ip address

i am unable to set statis ip and yet DHCP refuse to respect lease time i gave to allow hosts to keep their ips for a very long time

can someone please tell me what am not doing right or if juniper srx240 router is just useless with DHCP?

it is useless if a router can not respect DHCP lease time as it is disastrous everytime a restart happens as i have to remap all ips all over again.

so annoying and it is with anger i am typing this