VAT number not validating for Requester country Poland

Hello, I also get the problem when I try to validate requester VAT number in plugin settings.
Invalid requester VAT number entered in section Options > VIES Validation. The new requester VAT number has NOT been saved, because it would cause the VAT validation to fail at checkout. I try with diffrent VAT no which are validate directly on VIES validate page.

I have got this:

Entered VAT Country: “PL”. Entered VAT Number: “[my-correct-vat-no]”. Raw validation response (JSON):

{
“valid”: null,
“company_name”: null,
“company_address”: null,
“errors”: [],
“raw_response”: null,
“euva_validation_result”: “could-not-be-validated”
}