Hi Roy,
Thanks for reaching out. I've deleted your post because it contains sensitive information (your email in the top right corner of the screenshot). Please feel free to reply to us privately.
Can you please remove the hyphens from the customer ID in your request and then retry? Please let us know if you continue to have issues after trying this.
Regards,
Matt
Google Ads API Team

ref:_00D1U1174p._5004Q2PJFGG:ref