How much is the software of Xinger doors and windows cc? Is it a one-time payment?

The fighter in the garbage is more complicated to use, and it needs to input a lot of data, and sometimes it will modify the overlapping data, and then the data you recorded will have problems, resulting in all calculations being wrong. The key is that they still look like they are wrong, and the service is poor. After buying the software, there is basically no need to contact each other. It's sad that they spent a lot of money to make such a broken software.