I'm new to all of this, and have no clue about what to do.
Compiler specific version warnings:
my contract: 0x56d515dd97F7913C935905e25A96b8504697bb93
This is just a listing of known bugs affecting the compiler version you use. They're all fixed in newer compiler versions so you should simply upgrade to one that is not affected. If, for whatever reason, that's not an option for you, you should assess the impact of these bugs on your code and take appropriate countermeasures. Each bug has an associated blog post that explains the problem, the code that triggers it and the potential consequences.
For example KeccakCaching refers to a recently discovered bug that caused the values of keccak256 hashes pre-computed at compilation time to be incorrectly cached and reused under certain conditions. If you can't use Solidity >= 0.8.3, you should make sure you're are not using the affected syntax (keccak256 instruction, indexed event arguments, abi.encodeWithSignature(), string and bytes keys in mappings, data location of mapping and array types) in a way that would trigger it.
Hi how do you get rid of it? thanks