I have problem with my wallet. One hour ago I send coins. Transaction status still are unconfirmed. On status page net hashrate show me 0 and total volume didn't increase. Is there any problem with wallet or coin? My wallet version is v.1.1.0.0. Wallet is sync, connections number is 12.
sorry for my english
Net hashrate is 0 as there is no more PoW mining

Does that mean there wont be more miner quick-dumps past this point?
There will always be more miner dumps but not so big as the first dumps.
There are miners that religiously dump in the first 24-48 hours and they are happy with their 10-20% over cost of mining. Then there are the whales and P&Ders that did not necessarily mine but that drive the price up and then dump down. This group is after the 100-200% profit. This group will move on to the next coin when their objective is met. Then there are miners that did not sell on the first rise but hold out in the hope that the price increases a lot. Lets assume cost of mining is 500 sats for a coin, the 2nd group of miners are in the green and will remain in the green as long as price is above the cost of mining. At some point though, if real life services take too long to be implemented or if the general view is that a price recovery is not likely, or if there is a new hot opportunity with another coin launch, those miners will dump at whatever price over the 500 sats and take their delayed profits. The bag holders that bought at the peak, the long term believers and the holders that do not care if they lose money but that is willing to take the risk that a real life service will be worth a lot will be left to implement and wait for real life services. If the dev team is quick and strikes gold with a sought after real life service then great, otherwise the volumes and price will trickle down accompanied by desperate dumping until an eventual delisting.
The answer is therefore in the implementation of sought after real life services with quick delivery times of those services by an agile and competent dev team. It is the only way and remember that 1 week in crypto = 1 year in real life.