Replacement of simple remote for streaming stick

Have been a very content user of Streaming Stick (3600RW) until recently when 2 of the arrows quit responding altogether. Was shocked to find a simple replacement cannot be found in Roku store or Amazon (all remotes "not compatible w/ streaming stick"). No equivalent for simple remote model RC120. I have no interest in a voice remote or any such "upgrade"; also can't sub with cellphone app. as I have never owned a cellphone. How can this fine streaming stick be considered such an archaic relic that Roku customers may not simply purchase a replacement? There must be loads of them gathering dust in the warehouse somewhere. Any insights would be appreciated; feel like I am seeking the Holy Grail rather than a simple remote.