Update: Gocycle has been helping individuals with this issue so that the upgrade to v5+ doesn't break everything, so modifying to 3 stars. I'm still not going to be recommending Gocycle to new buyers as they're presumably now software limiting the top speed for all new buyers. Prior review: DO NOT UPGRADE. I'm quite shocked that Gocycle thinks it is OK to diminish the differentiating performance that justified their high price via a software upgrade. If you can stay on v4, you should.
Is speed button and top speed 40 kph back in version 6? I won't upgrade from V 4
WARNING, this app will speed limit your GoCycle. Version 5.2 enforces a mandatory speed limit in EU of 15mph (fast walk/slow jog) don't install unless you want to ruin your bike!
These issues and bugs have all been solved with v5.2 but you might need to contact GoCycle with your frame number if you still can't set your personal settings as with V4.
Exactly as others say loss of speed and throttle
My bike lost max speed after I updated this app, now my g3 are slower than Brompton
Performance improvements and bug fixes.
Install XCLEANER To Increase Your Phone Speed Performance And Clean Your Phone