It is still not possible to update an add-on, after a long wait it says that the Flynax server is not available. The following error is entered in the Error.log file:

17 May 07:51:34 | 4 repeats | DEBUG: File copying failed, file was not copied: https://www.flynax.com/_request/remo...9.3&php=7.4.33 on line# 1604 (file: /****/ingatlan/public_html/includes/classes/reefless.class.php)
17 May 07:51:34 | 6 repeats | DEBUG: Unable to use remote plugin downloading wizard, connect fail. on line# 1881 (file: /****/ingatlan/public_html/includes/classes/admin/rlPlugin.class.php)