Having trouble with my pocket wifi internet?

[Misheelle]

So I use the Huawei pocket wifi as my internet source (on plan with Vodafone) and for some reason I can't seem to load web pages. Like it would load like 1/8th of the loading bar and just stay there, with nothing but blank :/ I also use my mac book pro, so when I check the wifi status it says it's connected to it. I've also restarted/shutdown my mac and turn of and on the wifi pocket device, but the same thing is happening. I was wondering is it the SIM card or the pocket wifi device that's doing this? Never had this problem before... And I don't wanna waste money on buying another pocket wifi and the same thing is happening, so I just wanna make sure. Thanks!