May I know, how many attack amplified u r adding?
Mine is never go beyond x6, and that made my EP 300,000(originally around 200,000), which seem to be more risky than yours. But my account still safe.
I think attack amplier is still safe if not using too much, since I can notice that they are among the top 100 ranking in my server(those who only have like 40 unique characters, with 3xx,xxx EP). I think they(the dev) may start detecting from those who has EP next to 400,000. Which is impossible even with full team of 6*.