Votes are not registered by the first try

dear Mav,
i have published the poll for the best movies of 2023 and it is in the process of development, but there is the following major problem.
After the user selects the titles he wishes, by pressing the button "vote", the results are not registered without any error message.
Every user must refresh the page and have to select his choises from the beginning. Only then  his choices are registered. And that happened to all the people tried to participate to the poll. Am I missing something?
Many thank's
/kostas