Your item doesn’t have a full demo setup and/or the demo URL it’s broken.

Your item doesn’t have a full demo setup and/or the demo URL it’s broken. Unfortunately this is seen as Queue Position Reservation and it won’t be tolerated because this creates review delays. Please resubmit your item once you feel is ready

i can’t understand what’s wrong help me to find out the error.

here is demo URL: demo url
email:demo@demo.com
password:1234

You need to check your hosting is not blocked in certain countries or was perhaps down when the reviewer tried to check it (works for us now).

Is it hosted in a decent environment or on budget shared hosting?

yes it’s shared hosting but now i am planing to purchase new paid hosting.
thanks @charlie4282 for spend time on it,