@ Sinobest, disable the "Block known bad bots" setting in reBOOT Settings > Security.
One or more of the entries in
/reboot/.bad_bots.php needs removing, but I don't know which at the moment.
After disabling it, I was able to get the rich result tester to work.
https://search.google.com/test/rich-results/result?id=QCmBTUAP_FocfQPJXewMNQ