'I'd prefer it if...'?

[Abc123]

Hi,

Please have a look at this sentence:

'I like your writing style, but I'd prefer it if you don't use Spanish in your paragraph, 'cause I don't understand it.'

Do you think I should use 'didn't' instead of 'don't' here? I'm not sure about that because actually this seems to mean 'I don't want you to use Spanish in the future.'

Thank you very much.
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Please help correct my mistakes whenever you see them. Many thanks :)

[Mister Micawber]

You can use either; both 'didn't' (subjunctive) and 'don't' (indicative) mean non-past (present and future).
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Native English teacher at Mister Micawber's

[Abc123]

Hi Mister Micawber,

So you say 'didn't' means present and 'don't' means future?
_________________
Please help correct my mistakes whenever you see them. Many thanks :)

[Mister Micawber]

No, Abc, that's not at all what I said. Please re-read my single sentence carefully.
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Native English teacher at Mister Micawber's