Hello @mktnegocios,
I have just checked your site and it appears to be functioning correctly, as evidenced by the screenshots provided here: https://postimg.cc/zbM0RWKW and https://postimg.cc/t7xzMsFS.
Posts and pages are created normally. We suggest clearing the cache on your site and browser and checking back again.
We hope this helps.
Best Regards,
8Theme’s Team