Hey meera,
Since you do not have a Premium License, you should not be posting support questions here on our site – this forum itself is called “Pre-Sales Questions”, and so you shouldn’t technically post technical support questions like this here either.
I’m not trying to be rude or make things harder for you! Those are just our policies, which apply to everyone, and so respecting them appreciated; we may not be able to reach a conclusion with your issues in this thread.
With all that being said, however, I will try to help here – the first thing I would recommend is to go through all of the steps outlined in this Knowledgebase article on our site: https://theeventscalendar.com/knowledgebase/fixing-http-404-errors/
If issues persist even after doing all of those steps, I would recommend replying with your “System Information” – if you’re not sure how to do that, this other KB article shows how → https://theeventscalendar.com/knowledgebase/sharing-sys-info/
Cheers!
George