all pdn ip connection failure

New sim card and two trash cans later same issues persist with me finally being sent the black device I hope this one is better than the trash can it's the only good internet in my area and my ol lady relies on the internet for her work from home job to TMobile y'all need to figure out what the PDN IP codes are and y'all need to figure out what "modem chip down" is I'm so sick of these two critical and major alerts that prevent my wifi from working I understand service is only 55$ but I'm also not gonna pay for service I'm not receiving yet again