Thanks for the advise. I have changed my IP and it has also been whitelisted on the domain registrar account.
See the content of my .htaccess file
### BEGIN - WHMCS managed rules - DO NOT EDIT BETWEEN WHMCS MARKERS ###
<IfModule mod_rewrite.c>
RewriteEngine on
# RewriteBase is set to "/" so rules do not need updating if the
# installation directory is relocated. It is imperative that
# there is also a RewriteCond rule later that can effectively get
# the actual value by comparison against the request URI.
#
# If there are _any_ other RewriteBase directives in this file,
# the last entry will take precedence!
RewriteBase /
# Redirect directories to an address with slash
RewriteCond %{REQUEST_FILENAME} -d
RewriteRule ^(.+[^/])$ $1/ [R]
# Send all remaining (routable paths) through index.php
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
# Determine and use the actual base
RewriteCond $0#%{REQUEST_URI} ([^#]*)#(.*)\1$
RewriteRule ^.*$ %2index.html [QSA,L]
</IfModule>
RewriteCond %{HTTP_HOST} ^.*$
#RewriteRule ^/?$ "https\:\/\/hostloni\.com\/" [R=301,L]
### END - WHMCS managed rules - DO NOT EDIT BETWEEN WHMCS MARKERS ###
# BEGIN cPanel-generated php ini directives, do not edit
# Manual editing of this file may result in unexpected behavior.
# To make changes to this file, use the cPanel MultiPHP INI Editor (Home >> Software >> MultiPHP INI Editor)
# For more information, read our documentation (https://go.cpanel.net/EA4ModifyINI)
<IfModule php7_module>
php_flag display_errors Off
php_value max_execution_time 30
php_value max_input_time 60
php_value max_input_vars 1000
php_value memory_limit 128M
php_value post_max_size 8M
php_value session.gc_maxlifetime 1440
php_value session.save_path "/var/cpanel/php/sessions/ea-php74"
php_value upload_max_filesize 2M
php_flag zlib.output_compression Off
php_value allow_url_fopen On
</IfModule>
<IfModule lsapi_module>
php_flag display_errors Off
php_value max_execution_time 30
php_value max_input_time 60
php_value max_input_vars 1000
php_value memory_limit 128M
php_value post_max_size 8M
php_value session.gc_maxlifetime 1440
php_value session.save_path "/var/cpanel/php/sessions/ea-php74"
php_value upload_max_filesize 2M
php_flag zlib.output_compression Off
php_value allow_url_fopen On
</IfModule>
# END cPanel-generated php ini directives, do not edit