Hey there @carcaril_1 , thanks so much for reaching out about these achievements, and for being so thorough with your reporting of the issue and subsequent troubleshooting. It's great to hear you've already found a solution. Indeed, one of the steps on our connectivity guide is to switch to a wired connection where possible, as this makes routing much simpler, with less likelihood of bits of data getting stuck on the way between the router and your console.
Grats on getting those achievements. Let me know if you run into any other issue...