@Hamsterdam
If you have a cable ISP (Xfinity/Comcast, Cox, or AT&T), go into your router settings and verify that Wireless Mode is set to b/g/n under your 2.4ghz Wireless Settings. Restart both the router and Roku device after making this settings change.
You can test your device's connection ability by attempting to connect to a mobile hotspot (if available to you). If you can connect to your hotspot, should help to validate the above router setting is likely the culprit.
If the above is not applicable, feel free to post back with router model number and ISP (internet service provider).
Roku Community Streaming Expert
Just another Roku user... I am not a Roku employee.
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