Although seemingly obvious, consider the following:
Keep track of your account metrics. Amazon typically signals an upcoming lock, but sellers often ignore these signals;
Do not attempt to manipulate reviews or artificially influence the rating of a product or account. All “gray” and “black” methods work only until a certain time;
Stay tuned for updates to Amazon policies and the sellers’ forums;
Respectfully treat customers, do not violate the rights of competitors and carefully monitor their actions;
Have a professional service, such as ours, ready in case the account does get blocked. Despite all the precautions, troubles sometimes happen even with experienced sellers. Do not try to get out the block yourself and in a rush. Consult a specialist for advice.