Could you give us a little more info so that we can better assist you? What have you tried so far? I'd suggest logging into your account in a web browser and telling us what you see under the data section.
The offer requires the SIM card to be purchased directly from Public Mobile on June 1st, 2019 and is only valid for new customers, so you would have to purchase a new SIM card on the Public Mobile website today and register it by June 16, 2019. Your ...
It might also be looking into data saving modes for apps you frequently use. I know apps like Twitter and Reddit have options in their settings to load lower-quality versions of images and not autoplay videos while browsing using data. I'm sure other...
It might be worth going into your data settings and seeing which apps are using the most data so you can limit their usage. It's pretty easy to find both on iPhones and Android devices. I'd also recommend turning on "data saving mode" when on data an...
Did you restart your phone after activating your SIM card? If problems still persist afterward, it may be worth waiting a bit and trying again. Some features may take a little bit of time to start working on new accounts.