a) Check if you have the wordpress last version installed. If not, update to the last version.
b) Fill out all settings fields for ours plugins.
c) Check your memory status:
Ours plugins and themes can tell to you if you have enough free memory or not and advise how to improve it. Usually have one Memory CheckUp tab or dashboard warning. Please, check that. Try to run your site with low memory is a critical error !
Try our free plugin WP Memory to get tips about memory.
d) Activate only the plugins required by our theme.
If works fine, begin to activate your anothers plugins, one each time.
After install each plugin, look the site.
If stops of works, means that plugin is defective or not compatible with our plugin and you need replace it. For more details, please, look our page: http://siterightaway.net/test-for-conflicts/
e) Use updated (last version) browser Firefox, Chrome or Safari. Avoid to use internet explorer.
f) Set the permalink to Post Name to avoid 404 error pages
Settings => Permalink
If 404 error persist, try empty the cache of your browser and mark permalink as PLAIN, save and then mark as POST NAME again and save.
g) If you are running WordPress Version 5.2 or bigger, Check your site health in:
Dashboard => Tools => Site Health
h) Try to change debug to true in your wp-config.php:
and look your front page.
If you have a professional version of ours themes or plugins, we can install and check for errors for free to you.
After check all above, please, go to our support page.