i lost my base

hi james its cruze18000 im fairly new to the server im really enjoying your server its the first ive ever joined but im here messaging you because i lost acces to my claimed base in the nether its i was trying to set a new base up but i erased the other base as home the base also containts all the loot ive collected and its on top of the nether roof i ended up getting there on accident when i was telepeporting through the rtp option