Sorry about this experience.
It looks like you are on a plan that offers download speeds of up to 25 Mbps. I just ran a test from your modem and I’m seeing these speeds:
It is possible that you could have a Wi-Fi issue. Could you please run a complete speed diagnosis (including a test from your modem) with https://speedcheck.viasat.com/ and share the results with us? Here are some instructions to run this test: How to run a speed test from my modem?
Thank you,
Nacho