I've been doing the Jameson crash site farming and trying to trade for mats I need.
I fill up at Jameson and go to trade. Sometimes the trade fails and I get a message cannot contact servers. When I logout and log back in, the materials are no longer full.
Am I doing something wrong?
You didn't do anything wrong. The problem is that the game is bugged. To try to work around the issue and minimize losses, you can do the following:
1. Go to the material trader's place and try to trade a grade 2 material. For example, trade 1 Tagged Encryption Codes for 3 Unusual Encrypted Files.
2. If the trade is unsuccessful, do a relog and return to step 1.
3. If the trade is successful, try to trade a grade 5 material. For example, trade 96 Adaptive Encryptors Capture for 16 Datamined Wake Exceptions.
4. If the trade is unsuccessful, return to the station services screen and then go back to the material trader's place. Try to trade the same materials again, but with the smallest possible amount. For example, trade 6 Adaptive Encryptors Capture for 1 Datamined Wake Exceptions.
5. If the trade is again unsuccessful, do a relog and return to step 1. This way only 6 Adaptive Encryptors Capture will be lost after the relog.
Another tip: Keep at least 1 Atypical Encryption Archives in stock when returning to Jameson Crash Site, because there was a bug that imposes a limit of 100 for zeroed grade 4 materials.