Teamwiever wont run with new router

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Hi: Teamviewer has been running fine. I have a new router as I have changed ISP. Now teamviewer cant get a connection. My network is fine - PC is running perfectly and all other devices are on linew OK. When I move PC to a different location (where I am) with a previously known router, Team viewer connects perfectly. 

Team viewer seems not to like my new router!!!!

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