Houzez WordPress Theme Mobile Fixes + PHP Error Resolution

I need a Houzez theme expert to fix mobile responsiveness issues and resolve PHP errors on my real estate website (midtowndirecthomes.com). Site Details: WordPress site on WP Engine hosting Running Houzez theme + WPBakery Page Builder Real estate site with iHomefinder/Optima Express IDX integration 65 pages, 316 blog posts, established site (running 6+ years) Issues to Fix: Mobile responsiveness problems: No mobile logo displayed (just a blue header bar) No mobile navigation visible without opening hamburger menu No phone number visible on mobile header (need tap-to-call) Hero image on homepage is cropped poorly on mobile Body text is too large on mobile Site doesn't look professional on phones PHP errors (2,261 daily, confirmed by WP Engine): Multiple errors in /houzez/framework/functions/helper_functions.php (line 652) Errors in /houzez/inc/header/header-4.php (line 14) Errors in /houzez/inc/widgets/houzez-contact.php (line 40) Errors in /houzez/single-property.php (line 55) Likely needs Houzez theme update + custom code fixes Deliverables: Mobile site looks professional with logo, navigation, and phone tap-to-call All PHP errors resolved Site speed test (Google PageSpeed Insights) before/after Brief documentation of what was changed Access I'll provide: WordPress admin login WP Engine SFTP credentials if needed Budget: $150-300 fixed price Timeline: Complete within 1 week Must-haves: 5+ years WordPress experience Specific Houzez theme experience (please link to a Houzez project you've worked on) Strong English communication Available for one round of revisions Please share examples of Houzez sites you've worked on and your approach to fixing the PHP errors.