If your hostinger wordpress hosting plan do not includes cloudflare and you want to use addon domain or sub-domain for which hostinger wants you to pay extra for ssl certificate. You can use this method to get free ssl certificate from cloudflare.
0:00 Intro & Explanation
0:45 Create cloudflare account
1:51 Add website to cloudflare
5:57 Activate flexible ssl
8:00 Install custom ssl certificate on origin server
10:24 Use Simple ssl plugin for wordpress
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