Encountering multiple issues related to deprecated methods in the theme

Highend Theme Support Team,

We are reaching out regarding a site we manage for our client (https://ratti-report.com/) that is encountering multiple issues related to deprecated methods in the theme and errors in the payment gateway setup.

Current Errors:
We are seeing the following error messages on the site:

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Deprecated: Method hb_options is deprecated since Highend version 3.7. Use highend_option instead. in /home/customer/www/ratti-report.com/public_html/wp-content/themes/HighendWP/functions/deprecated.php on line 611
Deprecated: Method hb_module_enabled is deprecated since Highend version 3.5.0. Use highend_is_module_enabled instead. in /home/customer/www/ratti-report.com/public_html/wp-content/themes/HighendWP/functions/deprecated.php on line 175
Additionally, payment processing through Stripe via MemberPress is failing.

Summary of Our Investigation:
Theme and Plugin Conflict:

MemberPress support suggested disabling all plugins and switching to a default theme to identify conflicts. They also pointed out that the deprecated methods in the theme might be contributing to the issue.
Debugging Steps Taken:

We enabled WordPress debugging, reviewed logs, and shared findings with MemberPress support.
MemberPress confirmed that the payment gateway setup follows standard guidelines and suggested the issue might be related to the theme.
Error in Stripe Payment Processing:

Stripe payments fail with the error message:
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The provided setup_future_usage (null) does not match the expected setup_future_usage (off_session).
This persists despite reconnecting Stripe and following MemberPress troubleshooting steps.
Assistance Requested:
Can you confirm if the deprecated methods listed above are related to our payment gateway issue?
Are there any updates or patches available for these deprecated functions?
Would you recommend specific steps for resolving these conflicts?
We appreciate your guidance in resolving these issues as quickly as possible to restore full functionality to our client’s site. Please let us know if you need additional information or access to investigate further.

Looking forward to your response.

Best regards,
Saqlain TEchnical Project Manager
ShoreSite Web Designs
management@shoresitedesigns.com