What's wrong with my Tumblr account?

I have two Tumblr accounts. Today, I logged in to my second one on my iPhone and all of the blogs I follow on my main account were on my dashboard instead of the ones I follow on my other one. I tried logging on to the computer and the same thing happened. I even tried changing my password but that didn't help either. I'm so angry and this is just… Bizarre. Does anyone know what the problem could be?

If iphone is stolen, how will Find My Iphone

I'm just curious on the usefulness of the Find my Iphone. I tried using Find My Iphone to test to see if it detects my iphone and it doesn't. Then i realized that the Wi-Fi was turned off on my phone. Now IF someone did steal my iphone at like a train station. I doubt that my phone would be connected to the Wi-Fi or they would turn it off through the control panel. And i don't have 3g, 4g or LTE. So how would Find My Iphone be useful in getting my phone back?

Do MacBooks go out of date quickly like iPhones?

I have an iPhone 5 and even though I only have it about 18 months it's already out of date!

I'm interested in buying a MacBook Air but not sure whether or not to buy one now. When was the latest model released?

Also is there another model expected to be released soon and if so would they go out of date quickly? Generally how often are they updated and are there many changed between each version?

Internet router issue college dorm?

I live in a college dorm and we have both wired and wireless internet. Unfortunetly we have really bad Wi-Fi on out end of the building so we had to install a router. I have two questions regarding this. 1) when I try to disable DHCP in the routers settings it does not allow for some wireless devices to connect to the Wi-Fi such as my iphone. How can i fix this? 2) Every now and again when I'm trying to access a website the browser redirects to an address that reads router/. I don't believe that this is an issue with my router or its setup but can someone shed some light as to what it is?