@WdButch
Hi, they should be compatible with each other.
Do you know the model number of the Verizon 5G Home Gateway?
For TL-WA855RE, it supports 2.4Ghz only and you might need to make sure you are choosing 2.4Ghz of Verizon during setup.
It is also suggested to refer to this link to edit the wireless settings on Verizon 5G Home Gateway:
Recommended settings on the host router to work well with TP-Link Range Extenders
Thank you very much and best regards.