Experia box v8 inbound traffic fails

My Experia Box v8 worked fine last 3 years but now it is failing every few days. All inbound traffic is then blocked (my websites are not accessible anymore) because it can not reach the KPN update server. See below TR069 error. If this occur the router blocks automatic all inbound traffic, preventing any access to my servers. I called the KPN helpdesk and they are willing to replace my old Expiria Box v8 with a v10. Looking forward to receive this new router as soon as possible.

Update 04-01-2018:
I received a new router. Too bad they sent a v8 version and not the promised v10. So i called the service desk again. They promised me again to send a v10, next week.

Update 09-01-2018:
Today i received the Experia box v10. Installed it directly. So now all services are back to normal 🙂

01/02/2019 12:33:39 TR069:Inform Fail!!(Invalid URL or ACS unreachable)
01/02/2019 12:33:39 TR069:Remove host rijswijk1.cust.kpn.net dns record.
01/02/2019 12:33:39 TR069:Sending 1 BOOT inform.