Changing your plan shouldn’t have any impact on your ability to use your services.

Have you tried restarting your phone, removing and reinserting your sim card, resetting your network settings, or any other troubleshooting steps yet?

@Allan M the only thing I can think of is that most older plans were not throttled while the newer plans are typically “up to 100Mbps” throttled (sometimes with optional perk option to boost to up to double that).  I mean it shouldn’t really cause the issues the OP describes, but maybe?  

Have tried all of those things Allan. I am also reading a lot of the same complaints on the reddit koodo subforum recently.  Guess i can just hope there is some service happening in my area and things will improve. www.reddit.com/r/koodo

https://www.reddit.com/r/Koodo/comments/14oe7ua/anyone_get_terrible_data_signal/?utm_source=share&utm_medium=ios_app&utm_name=ioscss&utm_content=2&utm_term=1

https://www.reddit.com/r/Koodo/comments/156wr8z/anybody_elses_data_randomly_stop_working/?utm_source=share&utm_medium=ios_app&utm_name=ioscss&utm_content=2&utm_term=1
 

I am also suffering from really terrible internet service all over the place. Even with good reception. (This example is medium reception, but I have others with full bars, same poor connection)

Here's another screen grab taken with 100% signal. This was at the Swartz Bay terminal. Speedtest.net wouldn't even load.