PS API - Too Many Requests Block

We are developing a system for Amazon product price evaluation.

Our system needs to perform a complete scan of all the products our customers register with the intention of being notified when prices drop. To make this delivery, we always need to check if the product prices have dropped, for which we are using the Product Advertising API 5.0 Scratchpad, but even with a small number of records, we are receiving a "too many requests" block.

We would like to know if it is possible to increase the request capacity per minute and also what the current blocking limit is.

We need this information because it is extremely important for the functioning of our system, the only bottleneck we have is in the responses from your API, is there any way you can help us solve this problem?