Elle, at worst you will have to reconfigure the Adblock.
But if you switch Hudl off and then on, it should be OK.
At least for a while.
I had a spells where ads were getting through and reconfiguring became a pest.
Then, I learned if I installed Firefox, it was an add-on, in the Firefox settings.
So, that is where I am now.
No more problems R us!
I have no probs with emails, though I rarely use them.