If you need additional servers to synchronize your Electrum RXD wallet then I recommend this list of active servers.

To set up press Ctrl+K in the open wallet (or click on the big red dot at the bottom right) then uncheck all the boxes and add:

The port is always 500012

electrumx.radiantexplorer.com
electrumx.radiantblockchain.org
electrumx.radiant.ovh
radpool.ddns.net
radpool.net

Don't forget to set all these servers as ⭐ favorites (activate yellow star)
as well as rechecking the boxes.