Fix e-mail accounts

I have several domains and for some reason I am not getting emails from at least two of them. I moved my sites to hostinger and ever since I have not been getting my emails. In fact, if you have a better suggestion than I’m interested. They don’t seem to be helpful at all but that would be a second job probably. right now I need to get my emails working.

This job will simply be to trace down what the problem is and set up the DNS MX records and all that correctly. Google domains but the DNS can be with Google or any other site whatever you recommend. I prefer a flat rate price on those