Why isn’t my LTE Working?

Daniel did you try to restart your phone? Did you check if your data are on? Do you have signal? https://fizz.ca/en/faq/how-do-i-use-my-phone-to-access-the-internet
And if nothing helped contact Fizz Chat with Fizz.
To chat without problem:
First, connect you to your fizz account.
Then contact them at: https://fizz.ca/en/faq/what-payment-methods-can-i-use
Wait a few seconds to see the green chat bubble down to the right of the page.
When you see it, click on it.
Your chat session begins with Fizz
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Or you can send a message on messenger https://facebook.com/fizzca