Suitecrm problem to connect Horizone integrator (Need Suite CRM/Sugar CRM devveloper) -- 2

Hello Freelancers, Need Suitecrm problem to connect Horizone integrator (Need Suite CRM/Sugar CRM devveloper). When I'm trying to connect Horizone integrator (when we have a call from someone in the CRM contacts, the integrator show the CRM contact name, open the CRM contact and register the phone call) with Suitecrm, the integrator cannot accept credentials for Suitecrm. The message from Horizon integrator is- The remote server returned error (404) Not found. The integrator worked fine till April 2021. I need someone to fix the CRM to work with horizone integrator. Need to start immediately. Thanks!