XML-RPC

Does your free hosting plan allow XML-RPC? Thanks

XML-RPC is supported here. Just note that the bot protection system could prevent you from using external XML-RPC clients to connect to your website hosted here.

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So will WordPress work because it’s showing an error?

@BaileyJMatthews said:
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So will WordPress work because it’s showing an error?

Well, Wordpress itself will definitely work regardless of whether XML-RPC is available. As for what will and what won’t work, that depends on the specific error.