Help: err_connection_reset

Hi there…

This is my first post on this great community,

I have moved my website to 1and1.com provider, and istalled everything on it as it was on the old hosting company,

Unfortunally, I’m getting err_connection_reset with no reason, i asked the support team to check the server and they told me that everything is fine on the server and they cannot help with Webdevelopment issues,

so i cancelled the plan and recreated other one with a new Host Ip and nothing,

My plan is an VPS account with 6giga ram and 400giga hd space, ich time i had to access my website, i need to restart the container,

I though that it can be my theme i removed it and installed other and removed all other themes and nothing the problem persist…

today i removed all my plugins (deleted them) and still getting the same error…

I’m trying to google this issue but i’m not going anyway…

Can anyone help with this problem…

By the way, I didn’t have any problem on the last provider …