Unable to use T-Mobile Home Internet with work VPN, any suggestions?

I hope people get a chance to see this note.  My husband and I have been using T-Mobile in 2 homes (2 separate black towers).  We both work remotely and I have had a few occasions in the past where I could not get my VPN to work for a specific client/vpn, but in January, everything stopped working.  I read through this forum trying to find a solution.  Finally, I called support unsure of what type of help I would receive.  Short story, they were amazing and acknowledged the problem.  He also worked remotely and had the very same issues we are all having.  In the end, he had to jump through a lot of hoops to switch out the black boxes with the white towers.  T-Mobile will not allow a simple swap because the boxes are not provided by the same manufacturer.  He was very apologetic and tried to find every discount he could apply to make up the difference of the cost of switching.  But I could not continue to stay in the situation I was in.  He ordered them for us to be shipped out instead of going to a store where they are hard to find.  It cost us around $80 to swap out the hardware.  The big news is they WORK with the VPNs seamlessly!  If you have no other options, get the white boxes!