This looks to me reCaptcha is not setup correct.
ERROR for site owner: Invalid key type
You could also try without below items it to see if that does work.
Invalid key type
If you are using reCAPTCHA on your site and you see the ERROR for site owner: Invalid key type message, this means that you are using an incorrect reCaptcha key type. For example, V3 keys are not compatible with V2 reCaptcha, and V2 keys are not compatible with Invisible reCaptcha. Key types are not interchangeable.
Please make sure that your generated key type matches with the reCaptcha type you have configured in your Formidable → Global Settings → reCAPTCHA. If you cannot resolve your issue, feel free to open a help desk ticket for further assistance.