wd19tb+ 9560+ 3007WFP

I cannot get all 3 displays to show their maximum resolution when I get it to the dock. 

2 of the monitors I am using a DVI to Display Port. Active. adapter

1 using DVI to Active Usb C adapter (with also an optional usb C active to HDMI, [later on that])

Both monitors are using the DP and that never changes

The other monitor, if i choose the thunderbolt port. It work full resolution

If I use the MFDP USB-C it caps one of them to 1280 x 800.

I then bought this "Elebase USB-C Female to HDMI Male Cable Adapter,USB Type C 3.1 Input to HDMI Output Converter,4K 60Hz USBC Thunderbolt 3 Adapter" - https://www.amazon.com/Adapter-Converter-Thunderbolt-MacBook-Chromebook/dp/B0836T5P4Q

This allowed me to use HDMI.

When I plug in the HDMI into the dock I am again limited to 1280x 800

When I plug the HDMI into the computer however everything is fine again.

https://www.dell.com/support/kbdoc/en-us/000198086/how-to-use-and-troubleshoot-dell-thunderbolt-4-docking-station-wd22tb4

I looked at this site to see why it wouldn't work and I can't even understand what I'm looking at. 

The thing is I am using 2 laptops. and one of them, when I plug a monitor into the usb (non thunderbolt) the usb c monitor doesn't work. (perhaps my laptop port is broken, I'll trouble shoot that later) HP ProBook 650 G5

the thing is  why can't i get all resolution using the MFDP USB-C

Sorry if this is confusing.