need sever related advice - how to move a website and leave emails with existing host?

good morning all,

my clients have a domain name and they are using 1and1 services:
1) dns are being managed from 1&1 panel
2) they are using 1&1 webmail platforms (50/50 outlook vs online webmail platform users)
3) website is hosted with 1&1 as well

dns panel:


I would like to separate emails from the website, where emails would stay with 1&1, but the website would be hosted on my dedicated server.

could you help me out please with the possible solutions? .. I understand that I have to play with mx or A records, but in this field I'm clueless.

I had a suggestion to change A record at 1&1 so the domain goes to my server ip, but it just doesn't provide results.

screenshot (37.220.34.35 is my 1st IP)


...

and now the results are:


.. I have this feeling that there just a small thing to be done to gt it working :?

thank you in advance for your time, advice and expertease,
H

p.s. hopefully this is the right category to post this question.