can not change home page to a static page

I activated travelify theme for an academic conference website and tried to change the home page to a static page but still always get the recent post as the home page. I have changed the setting in the theme customize section to “static page” but have no idea what is wrong. really appreciate for any help.
here is my web:

Hi there,
Thanks for reaching out.
Relating to the issue here, could you kindly provide us with temporary admin access to your WordPress Dashboard so that we can have a closer look into this.

You may create a new administrator user within your WordPress Dashboard using your email address. You may then copy the login credentials to us in your reply.

I look forward to your reply.
Best Regards,

dear moderator,

here is login information to my wordpress

username: eicse2018
pwd: eicse18coT

thank you in advance

hi there

that’s not the theme problem, i think you have modified something in the .htaccess file and its not allowing to reach the proper homepage