“I have started wondering if it’s all it’s cracked up to be”. It’s so depressing to hear a new user say this. You have good reason too though – the system is a mess right now. But I can assure you, it’s only been this bad for a few weeks. (It’s never been brilliant though).
Yes, you need to request a new release code – the code only works at the docking station you request it from – and only for ten minutes. My advice is get a key – you can register on the website for £3 (plus £1 for your first 24 hour access period) and then it only charges your bank account when you go to get a bike. It saves all the ‘release code’ hassle, and finding terminals that aren’t working.
Give it time, we all hope it will improve.