Could you to open attached file and follow up the configuration steps
, it's useful and I'm sure that you will solve your problem
Attachment involves on PDF and contains
4 Configuring the Gateway-Type ONT (HG8240A/HG8245A/
HG8245Q/HG8245H/HG8247H/HG8247Q/HS3025/LS1015/LS2025/HG8245H(5dBi)/HG8245Q2/HG8245U/HS8245W/LS1035V/HN8245Q/HN8055Q)
+++ above Configuration steps , keep your device is updated with Last SW to guarantee that all certifications are applied and installed properly
Finally , I have tried to support herein
Thank you!