I have the MiFI 2200, I used to have the $50/month plan for 5gb of usage but I recently upgraded to $80/month for 10gb usage. Ever since I have updated my plan my inernet speeds have been extremely slow, I used to be able to download things at 100-200kb/s but now its like 10 kb/s. I also play a lot of online games and my ping is usually at like 180, but now its 300-500, usually around 400.
I understand your concern with the data speeds. I would certainly be alarmed at that type of drop in bandwidth. I am confident the plan change is not affecting the quality of service. Are you experiencing these speeds in multiple locations? Have you tested different Wi-Fi capable devices with the card? Were you running a speed test website or was this real time downloading? I can look into the account and network settings for you as well as your area to investigate your concerns further. Please PM your name and wireless phone number. I look forward to working with you to get this resolved.