Hi Olga check new password, dont know why previous didnt work
we have a licensed pro version of elememtor, and as already explained, before i was able to get and edit product page as for any other page. i was able to see both our previous products and the demo loeaded as well.
then something happen giving me that error.
please let me know if you need more info, it is not howevr for sure a elementor license issue.
thanks