There are certain challenges which I ran into as I started:

1. How will communication between the trainer and the customer take place?
2. Geeting the forms and the necessary inputs so that the data can be managed efficiently.
3. The identification which the person who is booking a gym will use to prove that he has genuinely booked the gym.
4. Managing the part of the transaction.

By learning with time I solved many of these issues.

1. For this, a protocol is set for the trainer that he has to compulsorily communicate with the customer with-in 8 hrs of booking. If he fails to do so without any good reason then his account is terminated. Also, there might be chances that some problems or prior commitments are there due to which he can't interact with the customer in the given hours then he as to let the GYMAale team know about it so customer support can deal with this.
2. I asked a few of the gym trainers and my friends who go to the gym so they suggested me few things which the form should have.
3. For the problem of identifying a solution to send a 6-digit security code on every booking is sent and we are planning to soon add a feature where the code will be converted into a QR and can be scanned through which the genuineness can be there automatically.
4. This was the most difficult part as there were many things to deal with when a transaction takes place. I have pretty much solved 70% of the transaction issue but some of this is still pertaining.