I am using the odroid XU4 too but i can not mine.
I have this problem with all pools.
Her my output from yentenminer:
[2017-12-12 17:30:09] thread 5: 121 hashes, 0.01 khash/s
[2017-12-12 17:30:09] thread 0: 242 hashes, 0.01 khash/s
[2017-12-12 17:30:09] thread 2: 122 hashes, 0.01 khash/s
[2017-12-12 17:31:09] thread 1: 678 hashes, 0.01 khash/s
[2017-12-12 17:31:09] thread 5: 345 hashes, 0.01 khash/s
[2017-12-12 17:31:09] thread 3: 640 hashes, 0.01 khash/s
[2017-12-12 17:31:09] thread 0: 686 hashes, 0.01 khash/s
[2017-12-12 17:31:10] thread 2: 347 hashes, 0.01 khash/s
[2017-12-12 17:31:10] thread 4: 347 hashes, 0.01 khash/s
[2017-12-12 17:31:10] thread 6: 684 hashes, 0.01 khash/s
[2017-12-12 17:31:13] Stratum requested work restart
[2017-12-12 17:31:13] thread 1: 41 hashes, 0.01 khash/s
[2017-12-12 17:31:13] thread 0: 39 hashes, 0.01 khash/s
[2017-12-12 17:31:13] thread 5: 21 hashes, 0.01 khash/s
[2017-12-12 17:31:13] thread 3: 36 hashes, 0.01 khash/s
[2017-12-12 17:31:13] thread 2: 19 hashes, 0.01 khash/s
[2017-12-12 17:31:13] thread 4: 19 hashes, 0.01 khash/s
[2017-12-12 17:31:13] thread 6: 35 hashes, 0.01 khash/s
[2017-12-12 17:32:08] thread 3: 596 hashes, 0.01 khash/s
[2017-12-12 17:32:09] thread 1: 641 hashes, 0.01 khash/s
[2017-12-12 17:32:10] thread 6: 652 hashes, 0.01 khash/s
[2017-12-12 17:32:13] thread 0: 690 hashes, 0.01 khash/s
[2017-12-12 17:32:13] thread 5: 347 hashes, 0.01 khash/s
[2017-12-12 17:32:13] thread 4: 346 hashes, 0.01 khash/s
[2017-12-12 17:32:13] thread 2: 347 hashes, 0.01 khash/s
[2017-12-12 17:32:16] Stratum requested work restart
[2017-12-12 17:32:16] thread 2: 17 hashes, 0.01 khash/s
[2017-12-12 17:32:16] thread 6: 66 hashes, 0.01 khash/s
[2017-12-12 17:32:16] thread 3: 79 hashes, 0.01 khash/s
[2017-12-12 17:32:16] thread 5: 18 hashes, 0.01 khash/s
[2017-12-12 17:32:16] thread 1: 77 hashes, 0.01 khash/s
[2017-12-12 17:32:16] thread 0: 35 hashes, 0.01 khash/s
[2017-12-12 17:32:16] thread 4: 18 hashes, 0.01 khash/s
[2017-12-12 17:32:23] Stratum requested work restart
[2017-12-12 17:32:23] thread 3: 76 hashes, 0.01 khash/s
[2017-12-12 17:32:23] thread 6: 80 hashes, 0.01 khash/s
[2017-12-12 17:32:23] thread 4: 41 hashes, 0.01 khash/s
[2017-12-12 17:32:23] thread 0: 80 hashes, 0.01 khash/s
[2017-12-12 17:32:23] thread 2: 42 hashes, 0.01 khash/s
[2017-12-12 17:32:23] thread 5: 42 hashes, 0.01 khash/s
[2017-12-12 17:32:23] thread 1: 81 hashes, 0.01 khash/s
[2017-12-12 17:32:58] Stratum requested work restart
[2017-12-12 17:32:58] thread 4: 202 hashes, 0.01 khash/s
[2017-12-12 17:32:58] thread 5: 202 hashes, 0.01 khash/s
[2017-12-12 17:32:58] thread 1: 396 hashes, 0.01 khash/s
[2017-12-12 17:32:58] thread 6: 399 hashes, 0.01 khash/s
[2017-12-12 17:32:58] thread 0: 401 hashes, 0.01 khash/s
[2017-12-12 17:32:58] thread 2: 201 hashes, 0.01 khash/s
[2017-12-12 17:32:58] thread 3: 376 hashes, 0.01 khash/s
[2017-12-12 17:33:19] Stratum requested work restart
[2017-12-12 17:33:19] thread 1: 238 hashes, 0.01 khash/s
[2017-12-12 17:33:19] thread 2: 121 hashes, 0.01 khash/s
[2017-12-12 17:33:19] thread 0: 241 hashes, 0.01 khash/s
[2017-12-12 17:33:19] thread 3: 224 hashes, 0.01 khash/s
[2017-12-12 17:33:19] thread 4: 122 hashes, 0.01 khash/s
[2017-12-12 17:33:19] thread 5: 121 hashes, 0.01 khash/s
[2017-12-12 17:33:19] thread 6: 240 hashes, 0.01 khash/s
[2017-12-12 17:33:40] Stratum requested work restart
[2017-12-12 17:33:40] thread 2: 122 hashes, 0.01 khash/s
[2017-12-12 17:33:40] thread 3: 225 hashes, 0.01 khash/s
[2017-12-12 17:33:40] thread 0: 242 hashes, 0.01 khash/s
[2017-12-12 17:33:40] thread 1: 240 hashes, 0.01 khash/s
[2017-12-12 17:33:41] thread 5: 122 hashes, 0.01 khash/s
[2017-12-12 17:33:41] thread 4: 122 hashes, 0.01 khash/s
[2017-12-12 17:33:41] thread 6: 238 hashes, 0.01 khash/s
[2017-12-12 17:34:02] Stratum requested work restart
[2017-12-12 17:34:02] thread 5: 120 hashes, 0.01 khash/s
[2017-12-12 17:34:02] thread 3: 212 hashes, 0.01 khash/s
[2017-12-12 17:34:02] thread 0: 222 hashes, 0.01 khash/s
[2017-12-12 17:34:02] thread 1: 224 hashes, 0.01 khash/s
[2017-12-12 17:34:02] thread 6: 219 hashes, 0.01 khash/s
[2017-12-12 17:34:02] thread 2: 121 hashes, 0.01 khash/s
[2017-12-12 17:34:02] thread 4: 121 hashes, 0.01 khash/s
[2017-12-12 17:34:23] Stratum requested work restart
[2017-12-12 17:34:23] thread 6: 207 hashes, 0.01 khash/s
[2017-12-12 17:34:23] thread 0: 218 hashes, 0.01 khash/s
[2017-12-12 17:34:23] thread 3: 203 hashes, 0.01 khash/s
[2017-12-12 17:34:23] thread 4: 119 hashes, 0.01 khash/s
[2017-12-12 17:34:23] thread 5: 120 hashes, 0.01 khash/s
[2017-12-12 17:34:23] thread 2: 120 hashes, 0.01 khash/s
[2017-12-12 17:34:23] thread 1: 215 hashes, 0.01 khash/s
What cooling do you have? I found that I get 80h/s with only 4 cores, same as with 8 cores due to overheating. Really need to put some big heatsink on the CPU.
SubsidyHalvingInterval: 800,000 blocks