Multiple H1 tag

I realized that there are redundant H1 tags in my website code, eg. :

1. empty H1 tags in content slider
https://osiedlekalwinowka.pl/

2. I built different heading for desktop and mobile, but both of them are visible in code and two H1 tags
https://profitia.pl/o-nas

thank you in advance for your suggestions :)

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