I feel like I have wasted too much time already with this theme. My WordPress is the last update and the PHP is now the most recent too.

I read in your FAQ section:

If you wish to request a refund within 14 days of your purchase, you must complete these 3 steps.
Deactivate your theme license
Delete ALL theme files from your website
Delete ALL theme files from your computer
Once completed the steps send an email to support [at] themely.com requesting a refund and confirm in writing you have completed these 3 steps.

I did this and I sent an email to the address indicated, so I am expecting a refund.
Thank you for your understanding.