Paid Drupal services

Hello,

We are looking to integrate Drupal 7 with the Square payment gateway's new JS WebPayments APIs  https://developer.squareup.com/docs/web-payments/migrate

The current code (https://www.drupal.org/project/commerce_square ) only works with the old SqPaymentForm but not the new JS WebPayments APIs.

I'm looking for a Drupal 9 developer.  Skills in module development and theme development are required.  The work will begin with  simple theme development following the website theme design shown in my profile.  I'm hoping to have this phase of the project complete by the end of January 2023.  This project could lead to more work.  I'm estimating approximately 20 hours to complete this work.

Website is on Drupal 7.82 and it uses the "Webform Protected Downloads" module to allow our customers to request download links to files in the /private folder. These downloads all stop after 300 seconds (5 mins) without any error or timeout message. The result is a partially downloaded file.

Fixing this issue is the highest priority. If this goes well, then further work is available: we want to move our Drupal 7 site away from Hostmonster and to Pantheon and upgrade our site to the latest Drupal version (9 or 10).

I'm having an problem that I don't understand and I'm very much in need of someone to help me fix it. The website is https://pendemonium.com and every page but the landing page has the following at the bottom of it. 

OK

The server encountered an internal error or misconfiguration and was unable to complete your request.

Please contact the server administrator at [no address given] to inform them of the time this error occurred, and the actions you performed just before this error.

Hello,

First some information about me. My profile will say that I have been on for 10 months, but I am actually a hard core Drupal user. I have been using Drupal since Drupal 5. I took a break at 7 due to health (worked some with 8&9), but I am stuck in a project (using 7). 
I told you that,  so that you would know I can understand you,  when you "speak" Drupal in your replies to me.

We look for a experienced freelance drupal developer (custom module development, theming, restructuring under consideration of best practice). For minimum 2-3 months, maybe longer. We've been with the project for a few years now, taking it over with Drupal 7 and adding more and more features. Later we upgraded to Drupal 8 and now to Drupal 9. We are looking for an experienced Drupal developer to join our team. We need to optimize the project in a tight timeframe, bring it up to modern standards and remove legacy issues.