How to verify Simple Crowdsale?

I created Simple Crowdsale, and used import “”;

tried using ABI constructor args, but looks that I doing something wrong or missing

how to verify it on eth/bscscan?

Please refer to this guide.

If you are using HardHat, use the package at

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No time for that, used just Remix, and as I read now should use FLATTENER, right?