Hi,
Please share website url, wp-admin and ftp info (login/ passwords) and send using “private reply”.

Thanks,

Hi,
Please update your theme, get fresh copy of theme and install it.
First Please take a backup of your website then do it.

Thanks,

Yes, you can update the theme.

Let me know if you want to me do, i will do it but in current installation and your current data may be losted.

Please confirm.

Hi,
I have tried to install your demo 2 time but I am getting execution error from your side, can you please ask your hosting provider to set these variables:
memory_limit = 256M
upload_max_size = 64M
post_max_size = 64M
upload_max_filesize = 64M
max_execution_time = 300
max_input_time = 1000

Once it is done, Ping me back.

Thanks,

Hi,
Installation DONE.

Please have a look and let me know if you face any problem.

Thanks,

Hi,
Please Google OpenTable, SignUp there and they will give you widget code, give me that code or paste in your theme wp-admin>appearance > Widget
or See Details from this url: https://wordpress.com/support/widgets/open-table-widget/

—
For Preview Please tell me path or URL with screen shot so i can check it.

Thanks,

Hi,
Please check all and let me know.

Always mention where you are facing the issue, e.g. on Third item you didnt mention its problem in back-end of wp-admin.

Thanks,