this IP block problem is being really serious for some; that sucks;
i'm having a wimax & a dsl, a laptop on each connection, using trial hotspot shield,
i've never had an ip block problem that couldnt be solved with disconnecting and connecting hotspot shield a few times!
every now and then it happens that it will take a lot of reconnects for the ip block to solve; (yesterday took one of the laptops 45min to get back to work!)
(dont know whether its common knowledge; just sharing)
ever since version 3.4 op changed the tm site it loads with the app (lets call it new version)
there's an "(OLD)" version (its literally called that on the app) which loads the other page the app used to load before v.3.4
for me the old version works more than twice as fast the new version and works way more smoothly;
but the old version do not open a download link for updates every time op releases a new version;
you'll have to email him and ask for it!
try that; email and ask for it see if it'll help with the ip blocks!
Well that's true, earlier yesterday I also experienced that , It connects and sometimes not and the app would pop up a message, but after an hour, it was already fixed and I noticed that when I change location I never been disconnected til I'm done and tired and being paid..

I still prefer this new latest version, the blocked IP was lessen this time and the error on recaptcha was also lessen... So most probably, the problem is on the internet connection, speed, and the server of the VPN that we are using...That is why we need to use VPN's with many server location..