OK... what laptop is it?
Two of my Mac ones don't either - I use adaptors for the ports they have - one is USB-c - RJ45 (ethernet) and the other I have is an older USB-3 - RJ45 one - both work just fine on an Ethernet Cat5e or 6 cable. Available at the usual online places for £10-20 and useful to have in your bits drawer - some have other multi-connections on them to connect other devices too. However, if Zoom is working fine on your own lappy then it suggests its not a wifi issue per se.
Re, Teams I dont use it much but there were a lot of reports last week in the media and posts on fora about Micro$oft Team's servers having problems affecting users worldwide. Not sure if that was pertinent to you - maybe do a Google search and see if that's resolved and give it a test run. Also try a test of Teams on your laptop - you can get a "free" account just to test it with a friend.
TBH - I dont think there is any point contacting VM - they wont have a clue as if they test your connection and it's fine at the time - they will just direct you to .. "Gadget Rescue" which is a paid for service and IMO not much cop. Also see what your IT Dep says too - as it seems the issue is on their equipment (if not M$) rather than VM's
I have an SH2 too but have never used its wifi - I have all my own equipment. It works perfectly in modem mode - but they are getting long in the tooth and you can get a free upgrade to a Hub3.
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John
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I do not work for VM. My services: HD TV on VIP (+ Sky Sports & Movies & BT sport), x3 V6 boxes (1 wired 2 WiFi,) SH2 in modem mode with Airport Extreme Router +2 Airport Express's. On VIVID200, Talk Anytime Phone, x2 Mobile SIM only iPhones.