No service where I used to have it (when using booster at a cabin)

I have a cabin in Newfoundland, on Frenchman's Pond (across the bay from Corner Brook). I used to get service on my phone while using a booster at my cabin but recently (with the same phone, no change in settings) I can't get any service while using my booster. I am wondering if anyone else has had a similar problem or if Public has changed anything recently wrt their coverage in general or their coverage in more remote areas, anyone have any ideas? I haven't been able to check if there is a problem with the booster, so if there isn't any other reason I'll probably just have to buy a new booster. Thanks.