Had to replace Directv receiver and now some channels are saying we don't subscribe to them....

A month or so ago our internet/cable box outside got hit by lightning which caused all kinds of wiring/electrical issues inside the house. One of them being it wiped out our Directv receiver in our living room. They came out and replaced it but when they did certain channels that we got before are now showing they we need to subscribe to them. We call customer service and they said they didn't show we ever had a package with those channels but yet we were getting them. They said we could get them back but it would raise our bill. Here's the confusing part....We realized we can go to the Directv app on our smart tv and log in to our account and those channels show up there and we can watch the shows we like. We called customer service back and told them this and all they cared about was trying to get us to upgrade our package. How is that possible? Anyone else ever had this happen? Not sure how to get the channels back that we originally had without paying more money. Thanks in advance for any and all help!