blocks failing

I was doing a iotp today and when i tried to block the very first 2 camps the 2nd general i sent was intercepted so I made him retreat. I was using a troop combo that left me plenty of time so when that general returned i sent him and my BHG back out only to have it intercepted again when the first camp had clearly been engaged for a while. So i just let him go and let my BHG keep going to see if he got intercepted too. Not 2 seconds after my 2nd gen hit the first camp he died as soon as he did my BHG got intercepted by the camp so i recalled him. Finally after a bit my first gen that hit the camp won when he had a 0% chance to win with the troop combo i sent. I managed to block the camps in the next section but when i got to the last 3 again my 2nd gen sent was intercepted when it shouldn't have been so i recalled him. As soon as i did i noticed the camp stopped looking like it was under attack so when my gen got back to base i sent him back out and he was intercepted by the first camp again which by this time was well under attack. I recalled him and soon after with no countdown bar ever being displayed the first camp died. I then sent my gens out for the last 2 camps and block worked fine. Was just wondering if anyone has had similar issues