@FredZ1959 Hi, welcome to our community. You may update firmware to latest to check whether the problem can be resolved. It is also suggested to delete all port forwarding settings and reconfigure...

@DMortier Hi, welcome to our community. How far away did you put the two Decos? Do you mean the satellite Deco is always solid red even though swap it with main Deco? If so, it is suggested to adjust...

@XxShakaxl Hi, welcome to our community. We may need to collect some information to understand your situation better. 1. Please try to take route print and share the result here. 2. Please try to...

@CarolSu Hi, welcome to our community. It is suggested to follow this guide to take troubleshooting. Troubleshooting guide of no internet access with TP-Link Wireless 4G LTE Router working as 3G/4G...

@gexon Hi, welcome to our community. Port forwarding requires the router to get a public IP address, so that is up to your SIM card instead of the router. You may refer to this guide to know more....

@hunyadis Hi, thanks for posting question here. It is suggested to follow this guide to troubleshoot: Troubleshooting guide of no internet access with TP-Link Wireless 4G LTE Router working as 3G/4G...