Verizon EOL’d the MI424WR in 2015 and you’ve probably been paying maintenance fees for quite a few years. Their current lease router is the Greenwave FiOS-G1100. While I dont recommend this because you’re taking a chance the tech will confiscate it, you may be able to get one from a grandfathered contract where there was a 1 year lease clause on paper. The newer contacts after this came out no longer have it, so it’s up to the rep. In addition, the leased ones requiring returns are flagged as unreturned equipment and will be confiscated. If you want the sanctioned lease model from Verizon, buy it new directly from Verizon. However, it isn’t uncommon for them to write the old ones off as customer owned, so it may not cost you anything to keep.
Your best bet is to get a nice 802.11ac router on the open market, especially if you don’t need phone service and can pick from the more common non-eMTA options. If you need a phone, you will need an eMTA combo unit or a dedicated cable modem like the Surfboard and a dedicated router.