@steviant
I use the exact same version of Opera Mini on my Android phone while using my carrier's network.
I suggest you should disconnect from WiFi and switch to your carrier's network.
Make sure you have an active internet connection while you are using Opera Mini for the first time.
If the issue still persists, clear cache and storage, uninstall, and reinstall Opera Mini from Google Play.
Open Opera Mini with an active internet connection your carrier provides.
Follow-up Questions
Did this issue persist when you downloaded Opera Mini for the first time, or did it just begin recently?
What's the name of your device, and what's its model?
What is your phone's Android version?