Trouble with automated invoice generation

[wsd]

Hi,

 

WHMCS 5.2.16

 

 

When the invoice is to be made via cron.php I not receiving any e-mail and will max made ​​two invoice, I run cron.php once again becomes a made ​​two invoice. so it will be many times I have to run the manualet when it is made ​​all invoice then there's e-mail again.

 

 

Are there others who have experienced the same, and there are some who can help me?

[wsd]

Nobody else having this issue also?

Some response from admin would be good also