Element not found using unique resource ID

Hi
I am using Python Appium Client and try to read certain elements on Android native App using Appium. I am trying to find 7 elements with certain resource IDs and then sub-elements of parent element. I could locate those elements using the Appium GUI (as attached). When I try to access the elements from within the code Appium fails to find some. It fails with “No element found” either for the parent element or for the child element, different each time.

The same code on other page for 12 elements and their sub-elements works perfectly fine. I have spent enough time using element/s and XPATH with no success. I confirmed there is only one parent element with given resource ID on the page. The driver is implicitly waiting for 5 sec and tried with 30 sec did not help.

Any suggestion is welcome.

My code:
def read_elements (self, type, noOfRecords):
result = []

for i in range(noOfRecords):
    id = 'xyz/inflated_row_graph_bar' + str(i + 1)
    element = self.driver.find_element_by_id(id)
    print(element)
    #index 0
    _period = element.find_element_by_id('xyz/time').get_attribute('text')
    print('Period: ', _period)
    #index 2
    _value = element.find_element_by_id('xyz/value').get_attribute('text')
    print('Value: ', _value)
    _value = _value.replace(',', '')
    tempDic = {'Period': _period, 'Value': _value}
    result.append(tempDic)
return result

Parent element from Appium GUI reads as:
index: 0
text:
class: android.widget.LinearLayout
content-desc:
package: xyz
resource id: xyz/inflated_row_graph_bar1
checkable: false
checked: false
clickable: false
enabled: true
focusable: false
focused: false
scrollable: false
long-clickable: false
is password: false
selected: false

Child element at index ‘0’:
index: 0
text: Mon
class: android.widget.TextView
content-desc:
package: xyz
resource id: xyz/time
checkable: false
checked: false
clickable: false
enabled: true
focusable: false
focused: false
scrollable: false
long-clickable: false
is password: false
selected: false