ERROR: Internet server auth failed. Error: Auth failed (Authkey/password wrong)

Manual
2024-04-11 05:17:37: ERROR: Internet server auth failed. Error: Unknown client (X9999)
2024-04-11 05:17:38: ERROR: Internet server auth failed. Error: Unknown client (X9999)
2024-04-11 05:22:38: ERROR: Internet server auth failed. Error: Unknown client (X9999)
2024-04-11 05:27:38: ERROR: Internet server auth failed. Error: Unknown client (X9999)
2024-04-11 05:32:38: ERROR: Internet server auth failed. Error: Unknown client (X9999)
2024-04-11 05:37:38: ERROR: Internet server auth failed. Error: Unknown client (X9999)
2024-04-11 05:42:39: ERROR: Internet server auth failed. Error: Unknown client (X9999)
2024-04-11 05:47:39: ERROR: Internet server auth failed. Error: Unknown client (X9999)
2024-04-11 05:52:39: ERROR: Internet server auth failed. Error: Unknown client (X9999)

After install client from web-interface
2024-04-11 05:58:14: ERROR: Internet server auth failed. Error: Auth failed (Authkey/password wrong)
2024-04-11 05:58:14: ERROR: Internet server auth failed. Error: Auth failed (Authkey/password wrong)
2024-04-11 05:59:43: ERROR: Internet server auth failed. Error: Auth failed (Authkey/password wrong)
2024-04-11 05:59:43: ERROR: Internet server auth failed. Error: Auth failed (Authkey/password wrong)
2024-04-11 06:04:43: ERROR: Internet server auth failed. Error: Auth failed (Authkey/password wrong)
2024-04-11 06:09:44: ERROR: Internet server auth failed. Error: Auth failed (Authkey/password wrong)
2024-04-11 06:14:44: ERROR: Internet server auth failed. Error: Auth failed (Authkey/password wrong)
2024-04-11 06:19:44: ERROR: Internet server auth failed. Error: Auth failed (Authkey/password wrong)
2024-04-11 06:24:44: ERROR: Internet server auth failed. Error: Auth failed (Authkey/password wrong)
2024-04-11 06:29:45: ERROR: Internet server auth failed. Error: Auth failed (Authkey/password wrong)
2024-04-11 06:34:45: ERROR: Internet server auth failed. Error: Auth failed (Authkey/password wrong)
2024-04-11 06:39:45: ERROR: Internet server auth failed. Error: Auth failed (Authkey/password wrong)
2024-04-11 06:44:46: ERROR: Internet server auth failed. Error: Auth failed (Authkey/password wrong)
2024-04-11 06:49:46: ERROR: Internet server auth failed. Error: Auth failed (Authkey/password wrong)
2024-04-11 06:54:46: ERROR: Internet server auth failed. Error: Auth failed (Authkey/password wrong)

computername=X9999
internet_authkey=UCRsn19oES
internet_mode_enabled=true
internet_server={my_server_ip}
internet_server_port=55415
internet_server_proxy=
backup_window_incr_file.client=
backup_window_incr_file.use=1
backup_window_incr_file.use_lm=1712837857
default_dirs=C:
default_dirs.client=C:
default_dirs.use=4
default_dirs.use_lm=1712840132
exclude_files.client=
exclude_files.use=1
exclude_files.use_lm=1712837857
image_letters.client=
image_letters.use=1
image_letters.use_lm=1712837857
include_files.client=
include_files.use=1
include_files.use_lm=1712837857
internet_compress.client=
internet_compress.use=1
internet_compress.use_lm=1712837857
internet_encrypt.client=
internet_encrypt.use=1
internet_encrypt.use_lm=1712837857
internet_full_file_backups.client=true
internet_full_file_backups.use=4
internet_full_file_backups.use_lm=1712838560
internet_image_backups.client=true
internet_image_backups.use=4
internet_image_backups.use_lm=1712837857
internet_speed.client=
internet_speed.use=1
internet_speed.use_lm=1712837857
local_speed.client=
local_speed.use=1
local_speed.use_lm=1712837857
max_file_full.client=
max_file_full.use=1
max_file_full.use_lm=1712837857
max_file_incr.client=
max_file_incr.use=1
max_file_incr.use_lm=1712837857
max_image_full.client=
max_image_full.use=1
max_image_full.use_lm=1712837857
max_image_incr.client=
max_image_incr.use=1
max_image_incr.use_lm=1712837857
min_file_full.client=
min_file_full.use=1
min_file_full.use_lm=1712837857
min_file_incr.client=
min_file_incr.use=1
min_file_incr.use_lm=1712837857
min_image_full.client=
min_image_full.use=1
min_image_full.use_lm=1712837857
min_image_incr.client=
min_image_incr.use=1
min_image_incr.use_lm=1712837857
startup_backup_delay.client=
startup_backup_delay.use=1
startup_backup_delay.use_lm=1712837857
update_freq_full.client=
update_freq_full.use=1
update_freq_full.use_lm=1712837857
update_freq_image_full.client=
update_freq_image_full.use=1
update_freq_image_full.use_lm=1712837857
update_freq_image_incr.client=
update_freq_image_incr.use=1
update_freq_image_incr.use_lm=1712837857
update_freq_incr.client=
update_freq_incr.use=1
update_freq_incr.use_lm=1712837857

Found a solution! It turns out that I specified a password for recovery, and not for creating a backup. I installed the client, not a general one, but one specially created for the host, and everything worked!