From tomorrow, this extension has become 100 % compatible with all yours themes. At my request, developer fixed all nuance and now is working perfect.
This extension is:
1) Cheaper (now 45 but I buy 29 – at the time of sellout)
2) Support – you will get answer in same day (100 %), by email;
3) Working perfect (“AJAX Quick Checkout” working with some bads in some part of checkout. Support … )