You have the Key ID but lost the Top password. Use the "Recovery Challenge":
After Key ID generation, the PS300B prompts for an . Unlike consumer devices, the PS300B enforces the following complexity rules: ps300b key id password top
A: PS-300B is used for creating and editing sewing pattern data. It is often used in conjunction with or as an upgrade to simpler programs. Its primary function is advanced pattern design and modification. You have the Key ID but lost the Top password