hello @gasmsy,
we are always present for our customers you have no need to be frustrated about the issue.
if you have any issue then you can report it us and we will try to solve it with our all efforts.
Well the size of the file may be small but the number of questions to be imported and its content may be just too big to handle by the server .Can you please try importing a csv file with not more than 20 questions and tell if you were able to import that ?
if you are able then please revert if not then
I request you to please create your own topic because to check your issue if we want your's admin credentials or page URL of your site then an Email sends to the person who creates this topic with your credentials either you send them as a private reply which is not good.
so for security purposes always create your own topic.