Fix Sendy Login Issue

I need someone to repair my Sendy email installation. I am unable to login and suspect it may need database or configuration correction. The ideal candidate will have experience in troubleshooting and fixing technical issues related to email systems. This is what Sendy things needs to be done: https://sendy.co/troubleshooting#login-page-reloads-without-error-message. This is where it is installed: https://attractionmethods.com/sendy/login Please give me a quote with ETA and what you need from me to fix this.