I tried to snipe lot 133584701756 by myibidder.
I cannot see what bids were made by your service, but a letter from ebay said that it was 160 euros. If we take a look to bid history we see that previous bid was 92 euros. And now I have a blocked account.
How did that happen and how I can to avoid this in future?

The sniper does not block your eBay account. This is between you and eBay only and not related to your bid amount.
Please contact eBay directly to resolve your issues.

Of course it does not block account, but I think that strange behaivour can cause it. And by strange behaviour, I mean that there was 160 euros bid after 92.
I'm here to figure out why myibidder bid so much and what should I do to not make this happen again.

I think you put 160 as your snipe amount, this is why the sniper bid the amount you set.
If you meant to set a lower amount, please always double-check.
It's still shows 160 on your account.

I'm not sure what you mean by strange behaviour. What kind of behaviour caused your eBay account suspension?
Placing a bid is a normal usage flow on eBay. It was done within the time limit as designed by eBay.
Please clarify on why you still consider it being "strange".

I thought that myibidder behaves like described here:
https://www.myibidder.com/login/faq/4/#q7
I really cannot get why it bid 160 euros instead of 93 euros?

It does. The sniper will place the bid amount as you specified.
If nobody bids higher, you will win at the lowest possible price just enough to outbid the previous bidder by one increment only.

But someone bid higher than your snipe amount, and that bumped the current price.
It does not affect what you are paying since you did not win it due to someone else's higher bid.