Reply 229648 to: Update Failed: The package could not be installed. PCLZIP_ERR_BAD_FORMAT (-10) :
Olga Barlow
Support staff
February 11, 2020 at 12:10
Hello,
1) What is the username to login to your WP Dashabrod
2) FTP user or pass is incorrect http://prntscr.com/r0ns44
Please, check and provide the correct one.