Anker Soundcore Flare+ Unable to power on

I recently purchased this speaker and it was a delight. However, when i downloaded the app to sync my speaker with my phone, there was a firmware update and after updating it, my anker soundcore+ seems to have issues powering up now?
Whenever i try to turn the speaker on, the light glows up but then goes off after 1 second. I have to press the on button multiple times before it actually works? (sometimes less than 5, sometimes more than 10 times!)

Also, how do you guys switch off this speaker? Do you have to hold the power button for at least 3-5 seconds before it turns off? (its my first anker product so i just wanted to make sure this was common?)

Follow up with the instructions manual or contact anker support

@Sean_Toh We are so sorry to know the issue with your Flare+ speaker, please try full charging your speaker via another cable, then turn on the speaker again. If the issue persists, please contact us via to get further assistance.