My cellspot not connecting

Hola,

I looked over the internet to see if there was something i was missing. I just upgraded to the v2 as the original cellspot stopped working 6 months ago ( just green power light nothing else)

The new one started with green flashing power and amber flashing internet. I had originally setup through my archer ax21 router but after two days switched to plugging directly into the modem. (a tplink tc-7620) and plugging the router into the lan port. Now i have green flashing power and solid amber internet led.

I called customer support and that was fruitless. After 20 minutes of telling the person on the phone that she doesnt have a script for my question she checked with her colleagues and told me that xfinity comcast doesn't block customers ports. ( Not entirely true as there are about a dozen ports they do block that started way back with the sasser worm iirc). 

I have tried various port scanners and the results are mixed but it seems to say that the ports are open but filtered? No explanation of that. 

I have cycled power a bunch of times and have tried resetting the cellspot a couple of times. 

Does tmobile have a port testing site that they recommend to see if i need to confront my ISP at a higher level?

Gracias