Unable to connect to DO by Jenkins DO plugin

I defined API key (and it works if I trying to connect through curl). Also, I installed ssh keys (private and public), but still not able to connect to DO. I’m getting: “Unable to authorize you”.

Here are the logs

Sep 09, 2021 5:29:06 AM FINE com.myjeeva.digitalocean.impl.DigitalOceanClient executeHttpRequest
HTTP Request:: GET https://api.digitalocean.com/v2/droplets?page=1&per_page=10
Sep 09, 2021 5:29:07 AM FINE com.myjeeva.digitalocean.impl.DigitalOceanClient executeHttpRequest
HTTP Response Object:: HttpResponseProxy{HTTP/1.1 401 Unauthorized [Date: Thu, 09 Sep 2021 05:29:07 GMT, Content-Type: application/json, Content-Length: 64, Connection: keep-alive, x-gateway: Edge-Gateway, x-request-id: 5cbed814-f630-41a0-8b5c-3a1eef2fa692, x-response-from: Edge-Gateway, CF-Cache-Status: DYNAMIC, Expect-CT: max-age=604800, report-uri="https://report-uri.cloudflare.com/cdn-cgi/beacon/expect-ct", Set-Cookie: __cf_bm=hrih4qfxXhs3OQa6X1VIJQT2QVIyq4xwiWnFmen0dww-1631165347-0-AYC0M+sBYEqE6MF1biLfkXFiWHQStKbjtthISeH5FvrbvqyCrUFAtMiN9I5ZHGwOqQ==; path=/; expires=Thu, 09-Sep-21 05:59:07 GMT; domain=.digitalocean.com; HttpOnly; Secure; SameSite=None, Server: cloudflare, CF-RAY: 68be045b98a3daa8-ARN] ResponseEntityProxy{[Content-Type: application/json,Content-Length: 64,Chunked: false]}}
Sep 09, 2021 5:29:07 AM FINE com.myjeeva.digitalocean.impl.DigitalOceanClient evaluateResponse
JSON Response: {"id": "Unauthorized", "message": "Unable to authenticate you" }
Sep 09, 2021 5:29:07 AM FINE com.myjeeva.digitalocean.impl.DigitalOceanClient evaluateResponse
HTTP Status Code: 401
Error Id: Unauthorized
Error Message: Unable to authenticate you

Please, help.

Jenkins v 2.309 DO plugin v 1.3.0