What carrier are you using?

I’ve got 5 devices on verizon but we’re paying quite a bit for it.

I also dont like the way the web interface works.

What are some other options. Ideally just buy the sim and go.

T-Mobile has small business internet, $70 for 300GB/month. Supports Peplink devices, but it won’t be just grab sim and go, you need to reach out to their support to get it provisioned as by default it comes with their high end home router and the SIM is locked to that device, they have to special provision it to support third party devices.