Describe the problem:
REQUEST FAILED ERROR 503
Which exchange/wallet is this regarding?
KOINLY
How did you import data into this wallet?
CSV and API
What have you tried to fix this so far? I havent got a clue what to do ,it jyst started doing it
Hello!
Alex from Koinly here 
Could you please send us an email at hello@koinly.io so we can give more direct support?
Thank you!
Best regards,
Alex