Good morning Haroldo,
I'm so glad to hear this, thank you for sharing what you did before the system started working normally for you, I'm sure our engineers are interested in hearing this so I'll pass this up to them. We're already working on a software update for the modem to address this issue so that disabling UPnP won't be necessary in the future.
Please don't hesitate to drop by the community again if you have additional concerns.
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