The host says it is not server related. They get this error:
[04-Jul-2021 23:04:09 UTC] PHP Fatal error: Uncaught GuzzleHttp\Exception\ClientException: Client error: POST https://api.dropboxapi.com/2/files/list_folder
resulted in a [b]401 Unauthorized
response:
{“error_summary”: “expired_access_token/.”, “error”: {“.tag”: “expired_access_token”}}[/b]
in /home/customer/www/ericj13.sg-host.com/public_html/wp-content/plugins/wpdm-dropbox/libs/vendor/guzzlehttp/guzzle/src/Exception/RequestException.php:113
Stack trace:
#0 /home/customer/www/ericj13.sg-host.com/public_html/wp-content/plugins/wpdm-dropbox/libs/vendor/guzzlehttp/guzzle/src/Middleware.php(65): GuzzleHttp\Exception\RequestException::create(Object(GuzzleHttp\Psr7\Request), Object(GuzzleHttp\Psr7\Response))
#1 /home/customer/www/ericj13.sg-host.com/public_html/wp-content/plugins/wpdm-dropbox/libs/vendor/guzzlehttp/promises/src/Promise.php(204): GuzzleHttp\Middleware::GuzzleHttp\{closure}(Object(GuzzleHttp\Psr7\Response))
#2 /home/customer/www/ericj13.sg-host.com/public_html/wp-content/plugins/wpdm-dropbox/libs/vendor/guzzlehttp/promises/src/Promise.php(153): in /home/customer/www/ericj13.sg-host.com/public_html/wp-content/plugins/wpdm-dropbox/libs/vendor/kunalvarma05/dropbox-php-sdk/src/Dropbox/Http/Clients/DropboxGuzzleHttpClient.php on line 59