Important troubleshooting: 1. Please note: it is not recommended to use it on unstable paint walls, rough walls, powdey walls, wet surfaces or uneven surfaces. Our tape is very sticky to avoid the wall falling off when taking the tape. 2. Make sure that the contact surface is kept clean and dry before use. After use, vigorously press and maintain the paste for 20 seconds to bring the tape in full contact with the surface, which will help to maintain durable stickiness. 3. How to remove it- -Hot air using the hair dryer will soften the tape and make it easier to remove. You can then use the sharp tool to slowly lift the tape from one side and then slowly remove the tape from the object surface. 4. To avoid possible damage, do not use adhesive tape to fix heavy objects or valuables. 5. Please place this product out of children's reach. 6. Store it in a normal, cool environment and avoid direct sunlight. If the tape is directly exposed to sunlight for long periods, the color of the tape surface may become yellow. However, the yellow tape will not affect the normal use of the product, and the adhesive performance of the tape will be performed normally in use.