Online store is not loaded properly:
In store.log there are errors like below:
Table Account doesn't contain row with id 0.
Configuration file cannot be properly parsed. It can happen due to different reasons, one of them is unclosed quotes in the store name or reseller's name. Incorrect parsing in such cases is a bug with id #PBA-81580 ("The resellers name/store name with unclosed quotes leads to broken store").
Correct the reseller's name, recreate the store.