Error details (JSON) No validation

All orders from EU countries still get the VAT displayed. I checked the log file and it seems there’s no communication possible. Any idea how to fix or is this temporary?

EU VAT Number could not be validated due to errors in the communication with the remote service. Error details (JSON)

[2017-10-02 13:11:36] wc-aelia-eu-vat-assistant.NOTICE: [WC_Aelia_EU_VAT_Assistant] Setting customer VAT exemption. Customer country: "BE". Number: "BE ****.***.***". [] {"process_id":764763}
[2017-10-02 13:11:37] wc-aelia-eu-vat-assistant.NOTICE: [WC_Aelia_EU_VAT_Assistant] EU VAT validation response (JSON): "{"valid":null,"company_name":null,"company_address":null,"errors":[],"raw_response":null}". [] {"process_id":764763}
[2017-10-02 13:11:37] wc-aelia-eu-vat-assistant.DEBUG: [WC_Aelia_EU_VAT_Assistant] EU VAT Number could not be validated due to errors in the communication with the remote service. Error details (JSON): "[]". [] {"process_id":764763}
[2017-10-02 13:11:37] wc-aelia-eu-vat-assistant.DEBUG: [WC_Aelia_EU_VAT_Assistant] VAT exemption check completed. Customer exemption: 0. Result: 5002. [] {"process_id":764763}