Access denied error when refreshing API token

Access denied error when refreshing API token

Hello,

I have checked our logs and I noticed the following situation:
1) API token expires
2) we try to refresh it, the response is access_denied

Example dates when this issue (access_denied) occurred:
- Tue, 07 Apr 2020 04:44:49 GMT
- Sat, 04 Apr 2020 04:44:52 GMT
- Fri, 03 Apr 2020 04:45:03 GMT
- Tue, 31 Mar 2020 04:45:36 GMT

Can you please tell me why this is happening? We would like to avoid this kind of behaviour. Is there anything on our side we have to change (or maybe it is related to the customer's settings)?

Thank you in advance,
Przemysław