Bought my first one of these earlier in 2020. Straight forward to assemble, found it really great to start with, but then a problem developed with the resistance (was either mega easy or very heavy with nothing in between) so customer services arranged a replacement. They also sorted DHL pick up of the old one. Unfortunately the replacement has now broken, after only about 6 weeks. It developed an awful grinding noise on pedalling and it was clear that something seemed to get caught or trapped at times, meaning the pedals jammed. Customer services have now arranged to refund me. I took the plastic casing apart and the belt (that acts like a chain on a normal bicycle) is badly split and frayed. Fragments and strips of the plastic are jamming in the other mechanisms. Really disappointing to have had 2 faulty bike. On the plus side customer service is excellent (perhaps they have a lot of practice?!)