I think you need to remove the max instance in the skill_db.yml ? did you check it ?
```
REMOVE THE ACTIVE INSTANCE? DID U TEST
- Id: 405
Name: PF_SPIDERWEB
Description: Fiber Lock
MaxLevel: 1
Type: Magic
TargetType: Attack
DamageFlags:
NoDamage: true
Range: 7
Hit: Single
HitCount: 1
- ActiveInstance: 3
Duration1: 16000
Duration2: 8000
Requires:
SpCost: 30
ItemCost:
- Item: Spiderweb
Amount: 1
Unit:
Id: Spiderweb
Interval: -1
Target: Enemy
Flag:
RemovedByFireRain: true
Status: SpiderWeb
```