Hello @morad,
1. We hope this message finds you well. We would like to inform you that you can adjust the font size of the “Add to Cart” and “Buy Now” buttons from XStore >> Theme Options >> WooCommerce >> Single Product builder >> Add to Cart & Quantity >> Button Styles >> Button Size (Proportion) as per your requirements. Please refer to the attached screenshot for more information: https://postimg.cc/3ygByjM9
2. We are pleased to inform you that your issue has been resolved. Please clear the mobile browser cache and check back to your site. We have identified that the Quantity Input was turned OFF for mobile under Header Builder >> Cart, and have now turned it ON, which has resolved the issue. Please refer to the screenshots below for further information:
https://postimg.cc/Jt4dDFpF
https://postimg.cc/D8hkM66d
We thank you for your interest in our product and remain at your disposal for any further assistance.
Best regards,
8Theme’s Team