Try replacing your nodes with usde.poolerino.com and usde.hash.so (alive pools), and try synchronizing again.
Generally, you don't need usde.conf file, unless you will be solo mining.
Wallet stop sync in block 98280 ,WHAT WRONG?
Addnote:
listen=1
daemon=1
server=1
rpcport=54448
rpcconnect=127.0.0.1
addnode=23.253.71.56
addnode=192.237.223.87
addnode= 149.210.166.111
addnode=184.58.86.194
addnode=98.88.53.62
addnode=54.201.183.106
addnode=46.4.147.19
addnode=89.179.74.21
addnode=65.78.62.173
addnode=172.250.126.77
addnode=74.195.24.126
addnode=72.207.116.39
addnode=62.113.162.50
addnode=176.26.99.86
addnode=128.78.187.149
addnode=87.110.100.100
addnode=usde.steadymining.com