Fairly inexpensive processing for the price

I bought 2 of these blinds because I wanted to drill into my apartment ungerne holes in the tile. Because you just can attach it to the ceiling, these blinds, I thought it was very convenient.
After delivery (approximately 3 days after ordering) the installation then has also worked out great and also cover in my very high, the blinds were long enough and kept most of the water in the shower.

After about 3 weeks, however, one of the two blinds hung meet me halfway and was no longer attached to the "role" for rolling. After a closer look, I saw that the curtain was only secured with some double-sided tape. Since it is no wonder that the curtain does not keep in a damp room long.
Did it then adhered first again and something rolled up, now it is again.
Would it but for the price no one friend and not buy again.