Error log:

2019-08-02 14:08:14,469 [Drive] [1] INFO - Load user settings from: 'C:\Users\Thurber\AppData\Local\CloudBerryLab\CloudBerry Drive\UserConfig.xml'
2019-08-02 14:08:14,485 [Drive] [1] INFO - Load user settings from: 'C:\Users\Thurber\AppData\Local\CloudBerryLab\CloudBerry Drive\UserConfig.xml'
2019-08-02 14:08:14,532 [Drive] [1] INFO - Load service settings from: 'C:\ProgramData\CloudBerryLab\CloudBerry Drive\serviceConfig.xml'
2019-08-02 14:08:14,532 [Drive] [1] INFO - Load mapped drives settings from: 'C:\ProgramData\CloudBerryLab\CloudBerry Drive\mappedDrives.xml'
2019-08-02 14:08:14,578 [DriveTray] [1] INFO - ********************************************************************************************************
2019-08-02 14:08:14,594 [DriveTray] [1] INFO - CloudBerry Drive TrayApp started. Version: 3.0.1.5
2019-08-02 14:08:14,594 [Drive] [1] INFO - Load accounts settings from: 'C:\ProgramData\CloudBerryLab\CloudBerry Drive\accounts.xml'
2019-08-02 14:08:15,109 [DriveUI] [1] ERROR - Ee: Failed to connect to an IPC Port: The system cannot find the file specified.

at Ea.G()
at Ea.g()
2019-08-02 14:11:38,396 [Base] [8] ERROR - <?xml version="1.0" encoding="UTF-8"?>
<Error><Code>AccessDenied</Code><Message>Access Denied</Message><RequestId>7B8C046A916C89D8</RequestId><HostId>H5OSqrOaXo+0BFzfYcl+V6hgX4bGTobeMuwKeaWgzKqDsedG0TsYLyxEqOmsCZ8u05DzLK0DQ7U=</HostId></Error>
CloudBerryLab.S3Client.Exceptions.S3WebException
Access Denied

System.Net.WebException
The remote server returned an error: (403) Forbidden.
at System.Net.HttpWebRequest.GetResponse()
at hj.a(hF )

2019-08-02 14:11:38,401 [Base] [8] ERROR - Header x-amz-request-id: 7B8C046A916C89D8
2019-08-02 14:11:38,401 [Base] [8] ERROR - Header x-amz-id-2: H5OSqrOaXo+0BFzfYcl+V6hgX4bGTobeMuwKeaWgzKqDsedG0TsYLyxEqOmsCZ8u05DzLK0DQ7U=
2019-08-02 14:11:38,401 [Base] [8] ERROR - Header Transfer-Encoding: chunked
2019-08-02 14:11:38,401 [Base] [8] ERROR - Header Content-Type: application/xml
2019-08-02 14:11:38,401 [Base] [8] ERROR - Header Date: Fri, 02 Aug 2019 19:11:34 GMT
2019-08-02 14:11:38,401 [Base] [8] ERROR - Header Server: AmazonS3
2019-08-02 14:11:38,406 [S3] [8] WARN - InitializeItems
CloudBerryLab.Base.Exceptions.AccessDeniedException
Access Denied
at hj.b(hF )
at hj.C(hF )
at hk.fb(hF )
at hk.A(hF )
at sh.B(ICancelable )
at Wo.iE(ICancelable )
at xP.A(Boolean , Boolean , String , Kd )
CloudBerryLab.S3Client.Exceptions.S3WebException
Access Denied

System.Net.WebException
The remote server returned an error: (403) Forbidden.
at System.Net.HttpWebRequest.GetResponse()
at hj.a(hF )

2019-08-02 14:12:07,836 [Base] [9] ERROR - <?xml version="1.0" encoding="UTF-8"?>
<Error><Code>AccessDenied</Code><Message>Access Denied</Message><RequestId>94CD032953A81ED9</RequestId><HostId>ZJoPttehOkURCTQyQjByaUE8tKsYEJn1ETiaYBBZ7xzdZRgFo8wKLcUyY5cNBuRXtDwfjaCN+Yg=</HostId></Error>
CloudBerryLab.S3Client.Exceptions.S3WebException
Access Denied

System.Net.WebException
The remote server returned an error: (403) Forbidden.
at System.Net.HttpWebRequest.GetResponse()
at hj.a(hF )

2019-08-02 14:12:07,836 [Base] [9] ERROR - Header x-amz-request-id: 94CD032953A81ED9
2019-08-02 14:12:07,836 [Base] [9] ERROR - Header x-amz-id-2: ZJoPttehOkURCTQyQjByaUE8tKsYEJn1ETiaYBBZ7xzdZRgFo8wKLcUyY5cNBuRXtDwfjaCN+Yg=
2019-08-02 14:12:07,836 [Base] [9] ERROR - Header Transfer-Encoding: chunked
2019-08-02 14:12:07,836 [Base] [9] ERROR - Header Content-Type: application/xml
2019-08-02 14:12:07,836 [Base] [9] ERROR - Header Date: Fri, 02 Aug 2019 19:12:04 GMT
2019-08-02 14:12:07,836 [Base] [9] ERROR - Header Server: AmazonS3
2019-08-02 14:12:07,841 [S3] [9] WARN - InitializeItems
CloudBerryLab.Base.Exceptions.AccessDeniedException
Access Denied
at hj.b(hF )
at hj.C(hF )
at hk.fb(hF )
at hk.A(hF )
at sh.B(ICancelable )
at Wo.iE(ICancelable )
at xP.A(Boolean , Boolean , String , Kd )
CloudBerryLab.S3Client.Exceptions.S3WebException
Access Denied

System.Net.WebException
The remote server returned an error: (403) Forbidden.
at System.Net.HttpWebRequest.GetResponse()
at hj.a(hF )

yes.

The client's computer's firewall is turned off